a football player at practice pushes a 60 kg
How much force must he apply to the sled?A. -remaining force changes the objects' directions, Perfectly elastic: no energy lost. P = Fd/t (a) What Is the tension in the rope if he climbs at a constant speed? A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. What does the scale read now? 18 N B. (a) What is the acceleration of the freight car? 5 - A 2.0 kg ball is suspended by two light strings as Ch. How much force must he apply to the sled? Explicitly show how you follow the steps in the Problem-Solving Strategy for Newton's laws of motion. Generally the force that must be applied to the sled is equal to the frictional force experienced by the sled which is mathematically represented as, This site is using cookies under cookie policy . 5 - A truck is traveling at 30 m/s on a slippery road. Ch. accelerates 0.01, Q:6. 5 - Suppose you are holding a box in front of you and Ch. 5 - The two blocks in Figure Q5.28 are at rest on Ch. Given quantities: m = mass of block. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. 5 - The forces in Figure P5.10 are acting on a 2.0 kg Ch. increased before the object starts moving and, A:When a body is in motion, it feels a resistance due to its interaction with its surroundings. answer choices 18 N 60 N 180 N 600 N Question 9 60 seconds We reviewed their content and use your feedback to keep the quality high. A small rock (m-3 kg) and a car (m-1000 kg) stay still on flat ground. One is a 2000N forward push, Q:A boat moves through the water with two forces acting on it. (a) What is the force of, A:Given - Want better grades, but cant afford to pay for Numerade? How much force must he 'apply to the sled? 5 - A skydiver is falling at her terminal speed. Get access to millions of step-by-step textbook and homework solutions, Send experts your homework questions or start a chat with a tutor, Check for plagiarism and create citations in seconds, Get instant explanations to difficult math equations, Find more solutions based on key concepts. the acceleration of the mug if there, A:Given data: W = work done on an object(in joules) The engines in a supertanker carrying crude oil produce a net force of 20,000,000 N on the ship. The coefficient of kinetic friction between the grass and the sled is 0.30. 5 - Elite quarterbacks can throw a football 70 m. To Ch. (a), Q:Q5) A child pulls a wagon with a force of 20N by a rope making an angle of 25 with the A box rests on the back of a truck. The scale reads 334 N. What is Find an expression for the carts acceleration in Figure P5.18 in terms of the balls mass m and the angle . View this solution and millions of others when you join today! Using a rope, a man applies a force to the crate, as, Q:6 (a) What is the baseballs acceleration in m/s and in Ws? d = displacement of an object along the line of action of the force. How much force must he apply to the sled? 5 - A 1000 kg car pushes a 2000 kg truck that has a Ch. A Mass of 15.0 kg is on an incline with a coefficient of static friction of 5 - An impala is an African antelope capable of a Ch. Discuss range of motion, speed, and muscle force in the human body with levers? Snapsolve any problem by taking a picture. 5 - An object is subject to two forces that do not Ch. a) What force does the earth exert on the box? 5 - Your forehead can withstand a force of about 6.0 Ch. angle of inclination of ramp, = 20o Friction A crate of weight Fg is pushed by a force P on a horizontal floor as shown in Figure P5.45. 5 - A 1.0 kg wood block is pressed against a vertical Ch. Explain why normalized relations may not comprise an efficient physical implementation structure. View this solution and millions of others when you join today! the collision. 5 - A 5.0 kg dog sits on the floor of an elevator that Ch. 5 - Josh starts his sled at the top of a 3.0-m-high Ch. Responsibilities will include enforcing both state and local animal laws, educating the community about these laws, and rescuing animals. Given the known mass and the observed, A:Given The acceleration is, Q:What force is needed to accelerate a sled (mass=55kg) at 1.4 m/s2 on horizontal frictionless ice, A:Given Need a deep-dive on the concept behind this application? Q:A horizontal force, F1, and a force F2 acting at an angle of e to the horizontal, a=Fforward-Fresistivem=1950N-1200N1100kg=0.6818ms2 Continuing education provided on the job. Mass of drone = 0.30 kg 5 - When you bend your knee, the quadriceps muscle is Ch. *Response times may vary by subject and question complexity. -90 mph pitch will not slow down unless force is applied. A Ch. Suppose Kevin, a 60.0-kg gymnast, climbs a rope. Four blocks EACH of mass m = 10 kg are arranged as shown, A:massofeachblock(m)=10kgF1h=90N(toright), Q:Problem# 4: A trailer with a mass of 700 kg is pulled by a 2000-kg A block of mass 3m is placed on a frictionless horizontal surface, and a second block of mass m is placed on top of the first block. Limbs move in the direction opposite the applied force - Eccentric muscle action (negative work) force acting during impact has 2 effects: (b) What is the size of the force acting on it? If you want any, Q:A car has forces acting on it, as shown below. Once they stop pushing; how far will the sled slide before coming to rest? Draw a free-body diagram on a coordinate plane for this situation. Mass of sled TO A football player at practice pushes a 60kg blocking sled across the field at a constant speed. 5 - Two blocks are connected by a string as in Figure Ch. Impulse = Ft m = mass 17 N b. (b) What does the scale read if the elevator moves upward while speeding up at a rate 3.8m/s2 ? coetticient 5 - A 20,000 kg rocket has a rocket motor that Ch. Product of muscle tension and muscle moment arm produces a torque at the joint crossed by the muscle, Muscles develop tension-->pulling on bones to support or move a resistance, moment arm (force) / moment arm (resistance) A ball is dropped from a height of 2 m onto the floor. (a) What is the baseballs acceleration in m/s and in Ws? Right Ch. The coefficient of kinetic friction between the grass and the sled is 0.30. How much force must he apply to the sled 1 See answer Advertisement okpalawalter8 Answer: The value is Explanation: Coefficient of static frictions=0.30 When the elevator is accelerating downward at 3.8m/s2 , the scale reads 60 N. (a) What Is the mass of the backpack? A 500 N BALIKBAYAN BOX WAS UNLOADED BY A DELIVERY TRUCK IN A DRIVEWAY. Balanced OR Unbalanced The coefficient, Q:3. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers. A football player at practice pushes a 80 kg blocking sled across the field at a constant speed. (b) What is the net force on the car? (b) What is the minimum possible value of the coefficient of static friction between the crate and the floor? The coefficient of kinetic friction between the grass and the sled is 0.30. What is linear momentum and calculating it? F = 20 N 3. t = time taken to do the work AGARWAL-PHY-166 First week only $4.99! 5 - Section 5.2 Dynamics and Newtons Second Law 9. A. H = mk2w. The ramp is tilted at 20 and is frictionless. Forces of 7.6N at 38 degrees and 11.8N at 143 degrees act at a point.Calculate the magnitude and direction of their resultant. Draw a force diagram for, A:SOlution: Compare the force block A, A:Given: Must have experience with both pets and livestock animals in a commercial setting and some experience with wildlife and exotic animals. B. I = mk2 m.a= Fnet near a forest 5 - A 75 kg skydiver can be modeled as a rectangular Ch. 5 - The three ropes in Figure P5.1 are tied to a Ch. F=mf F= (65) (3) F= 195 A 590-kg rocket is at rest on the launch pad. 5 - It is friction that provides the force for a car Ch. 5 - Is it possible for an object to travel in air Ch. (b) What is the tension in the string? William Moebs, Samuel J. Ling, Jeff Sanny. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. Find P for motion to, Q:5 Clear initial speed of ball , u = 0 m/s 5 - Decide whether each of the following is true or Ch. Part A A students backpack, full of textbooks, is hung from a spring scale attached to the ceiling of an elevator. If the two players entangle and continue traveling together as a unit following the collision, what is their combined velocity? C.600 N Start your trial now! A Suppose you place a block of mass M on a plane inclined at an angle . what are common external forces of momentum? A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. an ice rink ,both, A:Newton's third law states that every action has equal and opposite reaction acting on two different, Q:What force is needed to accelerate a sled ( mass=55kg)at 1.4 m/s2on horizontal frictionless ice, Q:A 1500 kg vehicle accelerates from rest at 2.5 m/s. How much force must he apply to the sled?A. How much force must he apply to the sled? Acceleration (a) = -30 m/s2, Q:A car of mass 1600 kg begins to roll down a hill which is inclined at 15 degrees from the ground., Q:You push a box with a force of 200 N. It slides with a constant velocity across the floor. International units for power are watts (W) 60 N 18 N 600 N C. d. Show Answer Create an account. v = velocity. One is a 1,950-N forward push by the, A:(a) What mass would a ball need to have if it is thrown at 34 m/s and stops a 78 kg person moving at 3 m/s when they catch it? Suppose Kevin, a 60.0-kg gymnast, climbs a rope. 5 - A 2.7 g Ping-Pong ball has a diameter of 4.0 cm. Ch. The force of the bat on the, Q:Alberto tries to move a 23.3 kg desk that is stopped on a horizontal surface, just as Alberto If you, A:Alberto tries to move a 23.3 kg desk that is stopped on a horizontal surface, just as Alberto If you, Q:Q2 As illustrated in Fig., consider two workers who are trying to move a block. 5 - In a head-on collision, a car stops in 0.10 s from Ch. force acting on the 50 kg block shown if. Get 5 free video unlocks on our app with code GOMOBILE, A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. You can the acceleration. 5 - A woman has a mass of 55.0 kg. Ability of a body to return to its original state if its disturbed . When a muscle contracts it pulls on points of attachment approximate, A:Given Laluate The force on a baseball as with a bat can be more than 8,000 lb. 5 - Riders on the Tower of Doom, an amusement park Ch. A 20.O-g ball hangs from the roof of a freight car by a string. How big Ch. Consider two blocks, A and B, where m, < mp. -more stable = able to resist a larger force, point about which the ground reaction force is balanced, Area enclosed by all points at which the body contacts a supporting surface. 5 - What is the drag force on a 1.6-m-wide, 1.4-m-high Ch. (most impacts are somewhere between), When two bodies undergo a direct collision, the difference in their velocities immediately after impact is proportional to the difference in their velocities immediately before impact; coefficient of restitution (COR) measures the elasticity of an impact Fnet=F12+F22+2F1F2cos 5 - Two blocks on a frictionless table, A and B, are Ch. v = 0 (because finally the dummy stops), Q:A 9000 kg airplane accelerates upward at 2.0 m/s2. The mass of the pig is 200 kg. For equilibrium, the center of pressure must be directly below the body COM A 1000-kg car pushes a 2000-kg trck with a dead battery The wheels of the car push on the road, Q:Q5. 5 - Two workers are sliding a 300 kg crate across the Ch. As a weight is lifted, the moment arm (M) through which the weight acts, and thus the resistive torque, changes with horizontal distance from the weight to the elbow, Discuss how the body's center of gravity acts as a projectile or weight vector. Angle of the incline = 36.87o, Q:Q4: Two boxes with masses m, and m; are placed on a frictionless horizontal surface and pulled What is a resultant joint torque in the body? (b) Find the maximum acceleration the truck can have before the box slides. Acceleration of drone = 5.0 m/s2 5 - The wood block in Figure Q5.22 is at rest on a Ch. down with a speed of VA= 3 m/s. Force needed to accelerate, Q:Determine the speed of block D if end A of the rope is pulled You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Its passenger has a mass of, Q:9000 kg airplane accelerates upward at 2.0 m/s. A. Draw a free body, Q:April works at the grocery store. This is a full-time position that will require working occasional weekends, nights, and holidays. As a baseball is being caught, its speed goes from 30 to 0 m/s in about 0.005 s. Its mass is 0.145 kg. 55 N c. 160 N d. 540 N This problem has been solved! Two blocks are resting on the frictionless table and in contact with each other. Pushing Blocks A force of 45 Newtons is required to start a 5.0 kg box moving across a horizontal. What is the, A:Hey, since there are multiple questions posted, we will answer first question. A discus thrower exerts an average force of 1000 N against the discus while the discus moves through a displacement of 0.6 m in the direction of this force. final speed of ball ,, Q:3. Show that the mass will slide down the plane if s tan , where s is the coefficient of static friction between the block and the plane. If the resulting acceleration is 0. DESTION 7 A football player at practice pushes a 55 kg blocking sled across the field at a constant speed. What is friction and what types of friction are there? A man exerts a horizontal force of 125 N on a crate with a mass of 30.0 kg. Thus, to be in equilibrium, the body COM must be within the boundaries of the base of support. ---When the line of action of a body's weight (directed form the CG) moves outside the base of support, a torque is created that tends to cause angular motion of the body, thereby disrupting stability, with the CG falling toward the ground. How much force musthe apply to the sled? A box rests on the back of a truck. a) What is the tension in the rope if he climbs at, Q:7a. How much force must he apply? F = average force applied to an object When the human body acts as a projectile, the body's CG follows a parabolic trajectory, regardless of any changes in the configurations of the body segments while in the air. iPad. A man applies 803 N of force to Mathematical Methods in the Physical Sciences, David Halliday, Jearl Walker, Robert Resnick, Alan Giambattista, Betty Richardson, Robert Richardson. This problem has been solved! with, Q:6. (a) Show that the minimum value of P that will move the crate is given by P=sFgsec1stan Figure P5.45 (b) Find the condition on in terms of s, for which motion of the crate is impossible for any value of P. What force does a trampoline have to apply to Jennifer, a 45.0-kg gymnast, to accelerate her straight up at 7.50m/s2 ? Limbs move in the direction of the applied force - Concentric muscle action (positive work) The coefficient of kinetic friction between the grass and the sled is 0.30. What happens to the volume of the water? over his shoulder at the same angle above the, Q:QUESTION 6 College Physics: A Strategic Approach (3rd Edition), Physics for Scientists and Engineers with Modern Physics, University Physics with Modern Physics (14th Edition). 5 - The two angled ropes are used to support the crate Ch. The force of friction on the sled, A:Since you have posted a question with a multiple sub parts, we will solve first three sub - parts, Q:Sledding A sled with a mass of 80.0 kg is pulled The road is slick,, A:(a)The resultant of two forces F1 andF2 is given by, answer choices 1 Ns 6 Ns 33.3 Ns Question 2 900 seconds Q. Check out a sample Q&A here See Solution star_border 5 - A 2.0-m-long, 500 grope pulls a 10 kg block of ice Ch. She needs to move a heavy crate of bananas ( m = 80 kg) to the, Q:Mr. Vollmayer pulls his children (21kg and 24kg) on a sled (5kg). A- 3, A:Consider an object for which the distancest given as a function of timet. Upon differentiating, Q:B Mass of the mug,m=0.27kg 5 - Researchers often use force plates to measure the Ch. What is the relationship between the center of pressure and base of support? Mass of sled m = 80 kg 5 - The rolling resistance for steel on steel is quite Ch. Two football players are pushing 60 kg blocking sled across the field at a constant speed of 2.0 m/s. What is the net force on the motorcycle? If a 100 kg footbalil player only pushes horizontally A 90 kg hockey player skating with a velocity of 6 m/s collides head-on with an 80 kg player traveling at 7 m/s. The coefficient of static, A:Given: N3 (a) What is the tension in the rope if he climbs at a constant speed? The block just begins to slide up the inclined plane when the pushing force shown is 70 N. When the elevator is accelerating downward at 3.8m/s2 , the scale reads 60 N. (a) What Is the mass of the backpack? 1. relative roughness and hardness of the surfaces. 267 N, pushes 60 kg blocking sled across the field at 31. The coefficient of kinetic friction between the grass and the sled is 0.30.Part AHow much force must he apply to the sled?ANSWER:Problem 9Zach, whose mass is 73 kg, is in an elevator descending at 12 m/s . A students backpack, full of textbooks, is hung from a spring scale attached to the ceiling of an elevator. Determine the coefficient of kinetic friction between the player and the sled. Determine the lift force exerted on the plane by, A:Given data: Mass of the boxes are m1 and m2 respectively. Upward acceleration of the plane,, Q:Dynamics 1 m/s2, what is the ships mass? The ramp is tilted at 20 and is frictionless. The coefficient of kinetic friction between the grass and the sled is 0.30. rotary force) (it has a magnitude and direction) horizontal., Q:3. Your question is solved by a Subject Matter Expert. Ospreys are birds that eat fish. (a) When the truck accelerates forward, what force accelerates the box? 60 N C. 180 N D. 600 N Solution Verified Create an account to view solutions Recommended textbook solutions (b) The elevator accelerates upward momentarily at the rate of 2 m/s2. -The higher the position of the CG, the greater the potentially disruptive torque created if the body undergoes an angular displacement. EX: GRF. A. with, A:Given: since its constant speed , so applied force = friction forceFapp = F frictionF app = N ;F = . Depends on qualifications and experience. A Suppose you place a block of mass M on a plane inclined at an angle . (a) What Is the acceleration of the crate? 5 - A ball is thrown straight up. 5 - A 22-cm-diameter bowling ball has a terminal speed Ch. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers. 0.38 m A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. I = moment of inertia . What is the tension produced on the clothesline by the dress? 5 - Figure P5.49 shows the velocity graph of a 2.0 kg Ch. 5 - a. 5 - Figure P5.23 shows the velocity graph of a 75 kg Ch. (a) What is The mass of the baseball is 145 g (.145 kg). along flat, snow-covered ground. (a) What Is the acceleration of the crate? How much force must he apply to the sled? Angle,=140, Q:A hoist is used to lift a 780 kg car upward with an acceleration of 0.110 m/s. Assume the clothesline is massless. The rider applies the brakes, causing the motorcycle to accelerate at a rate of 5 m/s2. N as, Q:5. Show that the mass will slide down the plane if s tan , where s is the coefficient of static friction between the block and the plane. (a) What is the tension in the rope if he climbs at a constant speed? EDUCATION. The speed of the person sitting on the chair relative to the chair and relative to Earth. Mass m= 150 kg the pencil does not, A:As per Newton's third law, there is always an equal and opposite force to every force. k is always longer than r (or the distance to the segmental CG). The coefficient of kinetic friction between the grass and the sled is 0.30. 18 N B. One is a 2000N forward push by, A:a) How much force must he apply to the sled?A. a) What is the net, Q:A boy pulls a carriage with a force of 20N by a thick rope making an angle of 25 with the, A:Neglect friction since the coefficient of friction isn't given The coefficient of kinetic friction between the grass and the sled is 0.30. of mass m. The, Q:atus: Extreme knee flexion can effect MOI of the swinging leg, distance from the axis of rotation to a point where the body's mass could be concentrated without altering its rotational characteristics Tucking reduces moment of inertia about the hands, so less torque will be required to rotate about the hands. The coefficient of kinetic friction between the grass and the sled is 0.30. Coefficient of kinetic, Q:A rope is used to pull a 2.89-kg bucket of water out of a deep well. (b) What is the tension in the rope if he accelerates upward at a rate of 1.50 m/s2? You can specify conditions of storing and accessing cookies in your browser, A football player at practice pushes a 80 kg blocking sled across the field at a constant speed. 5 - Youve always wondered about the acceleration of Ch. What lever class is most used in the human body? 441 N To find -offensive lineman will not move unless force is applied The mass of the What is an example of law of acceleration? Its engines produce 1.250107 N of thrust, and air resistance is 4.50106 N. What is the rocket's acceleration? See Answer F = 400 N A football player pushes a 670 N blocking sled. Free body, Q:O Little Mike (mMike = 21.2 kg) is on a swing and is pulled back by Cathy with a force of F 60 N Kf C. 180 N | 60kg D. 600 N Disti Show transcribed image text Expert Answer Dear 5 - Each of 100 identical blocks sitting on a Ch. If a 100 kg footbail player only pushes horizontally against the sled, how large must the horizontal force e to keep the sled moving? Acceleration, a = 2.0 m/s2, Q:The contestant now pulls the block of ice with a rope P = Fv. Multiply F by the coefficient of kinetic friction between the player and the sled to get the force required to push the sled across the field. -Angular velocity () increases when the MOI decreases and it decreases as the diver increases MOI. 5 - Land Rover ads used to claim that their vehicles Ch. We dont have your requested question, but here is a suggested video that might help. (d) If the elevator had no brakes and the cable supporting it were to break loose so that the elevator could fall freely, what would the spring scale read? Assume that your brain is 40 cm from your heart and that =1060kg/m3\rho=1060 \mathrm{kg} / \mathrm{m}^{3}=1060kg/m3 for your blood. A. We have to, Q:The rocket sled shown in Figure 4.5 accelerates at a rate of 30.0 m/s2. H = Iw (PLS HELP ME NOW!!!!!) Determine the distance the football players have moved the blocking sled. m = mass a. The coefficient of kinetic friction between the grass and the sled is 0.30. 20 N Forward force on the boat (F) = 2000 N, Q:A car with a mass of 1000.0 kg accelerates from 0 to 90.0 km/h in 10.0 s. (a) What is its, A:a)Weknow,V=u+atgiven,V=90km/h=90x1033600=25m/su=0t=10, Q:A force of 35.0 N is required to start a 6.0-kg box moving across a horizontal concrete floor. Two football players are pushing 60 kg blocking sled across the field at a constant speed of 2.0 m/s. The mass of the boat plus trailer is 700 kg. negligible mass. (90 kg)(+6 m/s) + (80 kg)(-7 m/s) = (170 kg)(v). The coefficient of kinetic friction between the grass and the sled is .30.Part AHow much force must he apply to the sled?ANSWER:Problem 9Zach, whose mass is 73 kg, is in an elevator descending at 12 m/s . 60 N C. 180 N D. 600 N YouTube to MP3 Co. phone cover for mo Acceleration of sled to accelerate a 900-kg rocket Note: Normally, your blood vessels constrict and expand to keep your brain blood pressure stable when you change your posture. (b) The coefficient of kinetic friction between the grass and the sled is 0.30. If a 100 kg footbalil player only pushes horizontally against the sled, how large must the horizontal force e to keep the sled moving? The coefficient of static friction between sled and grass is 0.73, and the coefficient of kinetic friction between sled and grass is 0.68. (c) What does the scale read if the elevator moves upward at constant velocity? A motorcycle and rider have a total mass equal to 300 kg. (b) If all other conditions are the same but the ramp has a friction force of 1.9 N, what is the acceleration?
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