99.36: What happens to 7v(2 1wqex4v/hug ywbthe inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of mat7ezd)bqp8 :d kter is one that does not depend on the quantity of matter present. Which of the following properties is NOT an intrinsic prope8 qzdpbk:e )7drty?

  04.16: A 20 kg boulder rests on the surface gmu8ck3v 5/ou of the Earth. Assume the Earth has mg8 uc3/ uo5vkmass $5.98 \times 10^{24} \; kg$ and $g = 10\;m/s^{2}$ . What is the magnitude of the gravitational force that the boulder exerts on the Earth?

  09.12: A 5.0 kg sphere is in free fall near the surface of the Earth. Whath(g bx3s n-rr22ptk(h is the magnitude of the gravitational force acting on the earth by the sphere?(s h2r(t2r-gknphx b3 The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase whinfb 4qn4y6np pv4b a 8guyl6z,;jf :6wle its acceleration decreasnn6g wbj8: upn64fp6yay qz;l,v44bfes?

  00.11: A certain particle undergocge(o *0mzy-dvj3:u9m2a ajm es erratic motion. At every point in its motion, the direction of the particle’s momentgze0m2m*majcdvyj( ou9-a3 :um is ALWAYS

  17.14: A block is suspended in the air at the end of a stri8hdxepupb1 ay: q+3a4x4oo :tng held by a person. The person pulls on the string uniformly accelerating the block upward for a short time. During this time, which one of the following choices correctly identifies the Newton’s Third Law pai8a uy1 x4ed:h+ 4 t3xp:aoobqpr force to the force of the string on the block?

  07.18: In which one of the following situations is the net force constantlya; m+ .gm+wfmq zero og;wqf+ m+a mm.n the object?

  13.28: An object is in free fall close to the ground. A person intkq;p 2ri e a3(1+ qnxn2jwc55uoel5j uervenes and slows the object uniformly to rest. Which one of the following statements must be true about the magnitude of the accelerati 1jjlq2e2e 3a kp+no; u5cn5wqiru(x5on of the object as it is being stopped by the person? The magnitude of the object’s acceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of x2,hp/g3ema e7ve1gt;c w bm5 .- buny30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultan/g; tn7.,-e1ebybhw px3auegv5mcm2 t ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine to form a feis w:rs7/dcblc*) 4resultant with a magnitude of which of the followin/ rbef:cs*7w s cld)i4g

  10.06: Which of the following statements is most closely associated w )(qlb4s )anvrith Newton’s Tha) rn4ls()vq bird Law of Motion?

  95.06: The reaction force does not cancel the action force because:wiuk3bx /di+ik )o-7 q

  14.14: A box rests on the floor of an elevator xdsu-rs7q1u(z,ir r:. The elevator is accelerating upwa(u7riusx-dr,:q 1zs r rd. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air wic 4,jji4 dg(18 6gnbrovfe1 grth constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance a g g,jb8vg1djn44fi (16ocrrecting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a spee etzpfs**rb ikt+ii /t310 1jld of 35 m/s. The batterswings and hits the ball. The m11 fi *+/k3zrtl p0teij*sti bagnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. 3/vtuqwx/e-4lh o i g27(mcoo On top of the book is a calculator, also at rest. Which one of the following choices is w/3qx hle(-uo /4o72ovgti c mthe Newton’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students in a Physics I class were in lab c;ieffs5duj ao c3 t2(bu4r3 vkwo.b.7onducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at bura4svo35d(ut. w.foe;f3 j7 bkic2 the right. From this graph, what conclusions can the students make?

  99.03: If the net force on a f uv3diyq he+,8m(:pl+.ia xekp -(aen object were doubled while at the same time the mass of the object was halvediplua.avq3x(pd:y (m-+k h , i8 e+eef,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformlyegm : 0uu7p3yq2r 2pga from rest to a speed of 20 m/s in 10s. 7 r32gm puueq02y: agpThe magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down g7hwdh 6z o,s9 ep6;mxthe road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the xp9; h6,shed mw76zg oforce that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tra(iv7*vd( nyjrctor-trailer trucks generai(v v(j*ny7rdlly accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws 90pllm5-u ;ek hsvsbyz7,prc1k1f3y a 2 kilogram ball, c ,y1;3 1uvekl flrb09ypzk7ssp -5hmgiving the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near bh:w223yityl u zx4, zthe surface of the earth with a weight of 100 newtons is accelzth,iw4 2 b:x u3yz2lyerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is acceleratedkn98nqhv2 t 6r /y0zln from rest by a constant force of 2400 N. What is the speed of the car 8.0 s after beginni6 2nqvktnnh 0 /y9z8lrng?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides 1.cej ;cq5 pvthf4*ijacross a rough horizontal floor before coming to req4f1j*i5vht j .;c epcst. The frictional force acting on the block is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across a rough horizoiy7cjej6by, m2 4v7pc 2q g,0p1k gtcdntal floorydjt,v 0gmp7b jgy,cipc6c1 ke27q 24 before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest*7 t)nhm wev+nqhhz*)t+fq uy +k u8o; on a horizontal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic frictionn;n+m)y*eh h7v qkthw+u*8f+tozu) q between the box and the surface is $\mu_k$ = 0.20. The coefficient of static friction between the box and the surface is $\mu_s$ = 0.60. What is the magnitude of the force of friction acting on the box during the push?

  13.16: A block initially moving at 8 m/s accelerates uniformly to res o iv 747y pkbv8c.zpeedu)7m+t on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices best represents the coefficient of kinetic friction between di7eo4c77p)uv m+e kyp .z 8vbthe surface and the block?

  00.21: A car of mass m slides across a patch of ice at a speedf3zyn;b0mw-) peh8nz v with its brakes locked. It then hits dry pavement and skids to a stop in a distan 0f)wnebp3n z-8h;ymzced. The coefficient of kinetic friction between the tires and the dry road is μ .
If the car had a mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides across a patch of ice at a speed v with its braf 3bx-y pmn9xh4m+ p9ckes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kineticp4p+xn -fm 99x bmych3 friction between the tires and the dry road is μ .

If the car had a speed of 2v, it would have skidded a distance of

  04.32: he driver of a car makes an emergency stop by slamming onap( a8 uc -omhw3qayi4w/k(u2 the car's brakes and skidding tu p(- icw /3ma8o2 auayhq4w(ko a stop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile rbi8lm 59gav.must carefully control each of the following devices. Whicm.r vi9l5g8bah of these devices can cause an acceleration in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rocket with a weight of 15000 newt4b xyct 80r- mdg7j0co+7yixtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 1+bc0 xrdg7ct 4jyy7 ixt-0m8 o2 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A person callev2h 1,d +mekvid Ted exerts a force T to the right on the box. A person called Mario exerts a force 2 ,+ me1vvkdihM to the left, which is half as large as the force T. Given that there is friction f and the box accelerates to the right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of equaldbia +yiv/2a+j nxem5y248cd length. Assume that on all tracks the roller coaster carts start from rest at the +2md5y/iyji+xa2avb4e d 8ncsame elevation and moves frictionlessly over the tracks to the finish.
If all roller coaster carts start at the positions shown, on which track would the roller coaster cart be traveling the fastest at the finish?

  02.28: The diagram below shows three roller coaster t x; 7ht8fim:uwracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the trackui fht:8x;7wms to the finish.
If all roller coaster carts start at the positions shown, on which track would the roller coaster cart reach the finish first?

  02.29: Assume the rollercoaster cartroljg2d,tx9rv w -ls frictionlessly along the curved track from point A to point C under the influence of gravity. What would be td,2rx9- wjtgv he direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kgz /vfe3(.4 rbo1hvm,xim3 n qj is dragged across the floor by a rope which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kinetic friction between the box and the floor if a 250 newton force on the rope is z/ bvhv( 43i3 1emqxmf.onj,rrequired to move the crate at a constant speed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rest is pushed against a wall by a 10 bj+:j n6-(jh qz7r wax)9zlwo0 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coeffic6n zwjj(lbqwx+h 7 r -9:zjao)ient of static friction is 0.50. What is true of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal pakbkg5 0* h4oa6ncs46l s hp/iltch of grass with a constant speed by applying a force P. The arrows in the diagram correctly indicate the directions but not necesh6h4 lcn abk/ p6sg5ko*sil04sarily the magnitudes of the various forces on the lawn mower. Which of the following relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is moving. Which of t00id kt2g q*lhrte/j,he following statemegtj,2k*e i d/0r thq0lnts concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is v) b5 m8 ((x/ph2itsiuj+otmipulled up a hill with an increasing speed. The crate is not fastened down to m ip(x/i2ot s5u( 8mt )jhb+ivthe sleigh. What force is responsible for the crate’s increase in speedup the hill?