Explanation The expression for work is, W = F d (1) Here, F is the force. d is the distance travelled by the object on applying force. Since the work is directly proportional to the force so the effectiveness of the force is measured by knowing the work done by the force. Substitute m a for F in above expression. W = m a d (2) From the third equation of motion for constant acceleration in one dimension is, v 2 = u 2 + 2 a d Here, v is the final velocity. u is the initial velocity. a is the acceleration. Rearrange the above equation. a = ( v 2 − u 2 ) 2 d Substitute ( v 2 − u 2 ) 2 d for a in equation (4)

Physics for Scientists and Engineers, Volume 1, Chapters 1-22

8th Edition

ISBN: 9781439048382

Author: Raymond A. Serway, John W. Jewett

Publisher: Cengage Learning

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Chapter 9, Problem 9.12CQ

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Whether the larger net force always produce a larger change in the kinetic energy than a smaller net force or not.

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Chapter 9, Problem 9.11CQ

Chapter 9, Problem 9.13CQ

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Chapter 9 Solutions

Physics for Scientists and Engineers, Volume 1, Chapters 1-22

Ch. 9 - Two objects have equal kinetic energies. How do...Ch. 9 - Your physical education teacher throws a baseball...Ch. 9 - Two objects are at rest on a frictionless surface....Ch. 9 - Rank an automobile dashboard, seat belt, and air...Ch. 9 - In a perfectly inelastic one-dimensional collision...Ch. 9 - A table-tennis ball is thrown at a stationary...Ch. 9 - A baseball bat of uniform density is cut at the...Ch. 9 - A cruise ship is moving at constant speed through...Ch. 9 - You are standing on a saucer-shaped sled at rest...Ch. 9 - Prob. 9.2OQ

Ch. 9 - A massive tractor is rolling down a country road....Ch. 9 - A 2-kg object moving to the right with a speed of...Ch. 9 - A 5-kg cart moving to the right with a speed of 6...Ch. 9 - A 57.0-g tennis ball is traveling straight at a...Ch. 9 - The momentum of an object is increased by a factor...Ch. 9 - The kinetic energy of an object is increased by a...Ch. 9 - If two particles have equal momenta, are their...Ch. 9 - If two particles have equal kinetic energies, are...Ch. 9 - A 10.0-g bullet is fired into a 200-g block of...Ch. 9 - Two particles of different mass start from rest....Ch. 9 - Two particles of different mass start from rest....Ch. 9 - A basketball is tossed up into the air, falls...Ch. 9 - A 3-kg object moving to the right on a...Ch. 9 - A ball is suspended by a string that is tied to a...Ch. 9 - A car of mass m traveling at speed v crashes into...Ch. 9 - A head-on, elastic collision occurs between two...Ch. 9 - An airbag in an automobile inflates when a...Ch. 9 - In golf, novice players are often advised to be...Ch. 9 - An open box slides across a frictionless, icy...Ch. 9 - While in motion, a pitched baseball carries...Ch. 9 - Prob. 9.5CQ Ch. 9 - A sharpshooter fires a rifle while standing with...Ch. 9 - Two students hold a large bed sheet vertically...Ch. 9 - A juggler juggles three balls in a continuous...Ch. 9 - (a) Does the center of mass of a rocket in free...Ch. 9 - On the subject of the following positions, state...Ch. 9 - Prob. 9.11CQ Ch. 9 - Prob. 9.12CQ Ch. 9 - A bomb, initially at rest, explodes into several...Ch. 9 - A particle of mass m moves with momentum of...Ch. 9 - An object has a kinetic energy of 275 J and a...Ch. 9 - At one instant, a 17.5-kg sled is moving over a...Ch. 9 - A 3.00-kg particle has a velocity of...Ch. 9 - A baseball approaches home plate at a speed of...Ch. 9 - A 45.0-kg girl is standing on a 150-kg plank. Both...Ch. 9 - A girl of mass mg is standing on a plank of mass...Ch. 9 - A 65.0-kg boy and his 40.0-kg sister, both wearing...Ch. 9 - In research in cardiology and exercise physiology,...Ch. 9 - When you jump straight up as high as you can, what...Ch. 9 - Two blocks of masses m and 3m are placed on a...Ch. 9 - A man claims that he can hold onto a 12.0-kg child...Ch. 9 - An estimated force-time curve for a baseball...Ch. 9 - Review. After a 0.300-kg rubber ball is dropped...Ch. 9 - A glider of mass m is free to slide along a...Ch. 9 - In a slow-pitch softball game, a 0.200-kg softball...Ch. 9 - The front 1.20 m of a 1 400-kg car Ls designed as...Ch. 9 - A tennis player receives a shot with the ball...Ch. 9 - The magnitude of the net force exerted in the x...Ch. 9 - Review. A force platform is a tool used to analyze...Ch. 9 - Water falls without splashing at a rate of 0.250...Ch. 9 - A 1 200-kg car traveling initially at vCi = 25.0...Ch. 9 - A 10.0-g bullet is fired into a stationary block...Ch. 9 - A car of mass m moving at a speed v1 collides and...Ch. 9 - A railroad car of mass 2.50 104 kg is moving with...Ch. 9 - Four railroad cars, each of mass 2.50 104 kg, are...Ch. 9 - A neutron in a nuclear reactor makes an elastic,...Ch. 9 - A 7.00-g bullet, when fired from a gun into a...Ch. 9 - A tennis ball of mass 57.0 g is held just above a...Ch. 9 - As shown in Figure P9.30, a bullet of mass m and...Ch. 9 - A 12.0-g wad of sticky clay is hurled horizontally...Ch. 9 - A wad of sticky clay of mass m is hurled...Ch. 9 - Prob. 9.33P Ch. 9 - (a) Three carts of masses m1 = 4.00 kg, m2 = 10.0...Ch. 9 - A 0.300-kg puck, initially at rest on a...Ch. 9 - Prob. 9.36P Ch. 9 - An object of mass 3.00 kg, moving with an initial...Ch. 9 - Two shuffleboard disks of equal mass, one orange...Ch. 9 - Two shuffleboard disks of equal mass, one orange...Ch. 9 - A proton, moving with a velocity of vii, collides...Ch. 9 - A billiard ball moving at 5.00 m/s strikes a...Ch. 9 - A 90.0-kg fullback running east with a speed of...Ch. 9 - An unstable atomic nucleus of mass 17.0 10-27 kg...Ch. 9 - The mass of the blue puck in Figure P9.44 is 20.0%...Ch. 9 - Prob. 9.45P Ch. 9 - The mass of the Earth is 5.97 1024 kg, and the...Ch. 9 - Explorers in the jungle find an ancient monument...Ch. 9 - A uniform piece of sheet metal is shaped as shown...Ch. 9 - A rod of length 30.0 cm has linear density (mass...Ch. 9 - A water molecule consists of an oxygen atom with...Ch. 9 - A 2.00-kg particle has a velocity (2.00. 3.00)...Ch. 9 - Consider a system of two particles in the xy...Ch. 9 - Romeo (77.0 kg) entertains Juliet (55.0 kg) by...Ch. 9 - The vector position of a 3.50-g particle moving in...Ch. 9 - A ball of mass 0.200 kg with a velocity of 1.50...Ch. 9 - Prob. 9.56P Ch. 9 - A particle is suspended from a post on top of a...Ch. 9 - A 60.0-kg person bends his knees and then jumps...Ch. 9 - Figure P9.59a shows an overhead view of the...Ch. 9 - A model rocket engine has an average thrust of...Ch. 9 - A garden hose is held as shown in Figure P9.32....Ch. 9 - Review. The first stage of a Saturn V space...Ch. 9 - A rocket for use in deep space is to be capable of...Ch. 9 - A rocket has total mass Mi = 360 kg, including...Ch. 9 - Prob. 9.65AP Ch. 9 - An amateur skater of mass M is trapped in the...Ch. 9 - A 3.00-kg steel ball strikes a wall with a speed...Ch. 9 - (a) Figure P9.36 shows three points in the...Ch. 9 - Review. A 60.0-kg person running at an initial...Ch. 9 - A cannon is rigidly attached to a carriage, which...Ch. 9 - A 1.25-kg wooden block rests on a table over a...Ch. 9 - A wooden block of mass M rests on a table over a...Ch. 9 - Two particles with masses m and 3m are moving...Ch. 9 - Pursued by ferocious wolves, you are in a sleigh...Ch. 9 - Two gliders are set in motion on a horizontal air...Ch. 9 - Why is the following situation impossible? An...Ch. 9 - Two blocks of masses m1 = 2.00 kg and m2 = 4.00 kg...Ch. 9 - Prob. 9.78AP Ch. 9 - A 0.400-kg blue bead slides on a frictionless,...Ch. 9 - A small block of mass mt = 0.500 kg is released...Ch. 9 - Review. A bullet of mass m = 8.00 g is fired into...Ch. 9 - Review. A bullet of mass m is fired into a block...Ch. 9 - A 0.500-kg sphere moving with a velocity expressed...Ch. 9 - A 75.0-kg firefighter slides down a pole while a...Ch. 9 - George of the Jungle, will mass m, swings on a...Ch. 9 - Review. A student performs a ballistic pendulum...Ch. 9 - Review. A light spring of force constant 3.85 N/m...Ch. 9 - Prob. 9.88AP Ch. 9 - A 5.00-g bullet moving with an initial speed of i...Ch. 9 - Review. There are (one can say) three coequal...Ch. 9 - A 2.00-g particle moving at 8.00 m/s makes a...Ch. 9 - Prob. 9.92CP Ch. 9 - Two particles with masses m and 3m are moving...Ch. 9 - Sand from a stationary hopper falls onto a moving...Ch. 9 - On a horizontal air track, a glider of mass m...Ch. 9 - Review. A chain of length L and total mass M is...

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Chapter 9 Solutions