99.36: What happens to the inertia of5kz yknc5aov.j71eud m8zhi-: o-ng + an object when its velocity is doubled?

  02.14: An intrinsic propertyq/nl29 wf q5ad of matter is one that does not depend on the quantity of matter present. Which of the following prop qn2dq9 /5flwaerties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface o b;ybb ps:9uv0ewjv8 3f the Earth. Assume the Earth has masvb3:eyus9wb v p ;jb08s $5.98 \times 10^{24} \; kg$ 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 wu :(y sd-h1mwvzp,wq0(vcd ( is in free fall near the surface of the Earth. What is the magnitude of the gravita,p-ws:wmzvq(yw0h( dcv u1d(tional force acting on the earth by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while its accelerag: b x-ez8mdc/tion m/8b xge d:cz-decreases?

  00.11: A certain particle undergoes erratic motion. At every point h4zcna.(q b)) sq.bu xin its motion, the direction))sanb4.uqh.b c (xqz of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the0 iv)uw j5p vg6bpl37t end of a string held by a person. The person pulls on the string uniformly accelerating the block upward for a short time. Dur 3)v l0pp7j56wv uitbging this time, which one of the following choices correctly identifies the Newton’s Third Law pair force to the force of the string on the block?

  07.18: In which one of the following situn ni9tqe+ -uo:ations is the net force constantly zero ot9 noi+-ueq:n n the object?

  13.28: An object is in free.2ld;4jouh a7 yikhy6 fall close to the ground. A person intervenes and slows the object uniformly to rest. Which one of the following statements must be true about the magnitude of the acceleration of the object as it is being stopped by the person? The magnitude of the object’s acceleration is a and the ayu7 ;lyj624 .dikohh magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, F2 of 50 N, and+chwrd4tcx 9: F3 of 70 N, acting on it. The magnitudc4dx h+9:cwtre of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be (4(;my duqboah 5wr *p k1(lbbcombine to form a resultant with a magnitude of which of the follow hb*u(q(om5d;bk 1p(waly4r b ing

  10.06: Which of the following statements is most closymrmlm4e( 2 k+ely associated with Newton’s Third Law of Motio 4k ml2m+yme(rn?

  95.06: The reaction force doz-m. qhyeec +df 3f,qyca*li.f6d : o5es not cancel the action force because:

  14.14: A box rests on the floor of an)si8jd/ n.eqj elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational forjidq. /njse 8)ce acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constan)lo qve:zm ph(m0xoq(q h.f7l96kvul q 0 0cy4t speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiverlo ): pqv9ke u( zlq0hmv6f(chl04 0qq.7yx mo during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. The bpduu7by*9a4d f )84vzu0eakuc 4j otn75j gl7atterswings and hits the ball. The magnitude of the force that the ball exertoje*8ub9ug 4a7ju4tnyc4vdd 5 ) 77pa l0ufkzs on the bat is always

  11.13: A physics book sits at r cd w/kxenh-4 tyl7+.oest on a table. On top of the book is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the force that the table exerts on the bext/hol .k47wycd- n+ook?

  05.06: The students in a Pzuanvl +x.m.e/(a v /bhysics I class were in lab conducting an experiment related to Newton's Second Law. The collected data were displ xzvn/l v(.maab+/ ue.ayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at the5).-y qjx gibvct82+fw y6vh e same time the mass of the objectw2jx865)q- y+ htiecg .bvyfv was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is acao )f0fye4a)e celerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force accelerating thyea4 fa eof)0)e car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass on(+ is;a3s 5avwy,yti f the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer app5 s +i3 watanvis;,(yylies on the tractor is

  99.16: Which of the following principles etbprka/ +1tvr; ad()best explains why large tractor-trailer trucks generally accelerate much more slowly tha (p)vb+ atrr tadk;1e/t automobiles?

  99.19: A 50 kilogram skater at rest onoglsn; 7.mf3 r a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which staorl ;s gfm3n.7tement describes the subsequent motion?

  00.13: An object near the surface of the earttrg4q h756.4lpyh)d z,hrcyoh with a weight of 100 newtons is accelerated atdgpc6yl47o ,y)t.r4h5zr h hq $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is clcqd437sc;d 1200 kg is accelerated from rest by a constant force o 47cc sd;cq3dlf 2400 N. What is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slidec t2w 6):kqwo +p(mja xukt:7vs across a rough horizontal floor before coming to rest. The frictional force acting on the block i (q+jt::v6 mwua cxpot7 k)2kws 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 rou19x/islv + wp-orglt,gh horizontal1rgw/poxs li+,-vtl9 floor before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a h2hz0i-b9f;v qs id qtq;plq( 9orizontal surface while a person pushes directly to the right qid2bzh; ;f9-qv qi qp09(tlson the box with a force of 60N. The coefficient of kinetic friction 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 uniformet5x1abt,ux y6/pn- za a;a0cly to rest on a horizontal surface. The block travels a distance of 12.0 m duript1-5axa n uyc6t xe,a0azb/;ng the slide. Which one of the following choices best represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides *rlgy;s vk4n 2across a patch of ice at a speed v with its brakes yvrg2kns; 4l* locked. It then hits dry pavement and skids to a stop in a distanced. 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 an(.cbc* qb +bgoc8; dct a speed v with its brakes locked. It then hits dry pavemcbb; qd.*c8gonb( cc+ ent and skids to a stop in a distanced. The coefficient of kinetic 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 emergene mr7tqxc7/ 3l r3oz9xcy stop by slamming on the car's brakes and skidding to a stop. How far would the car have sk9 /o7lqmx 3zce r3r7txidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully2 y/;rq23qvbmzc lu,u control each of the following devices. Which of these devicesur;zbqqcm/2l yu2 3 v, 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 newtons is 24000 newt0ohhf.ls -:md ons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 ml :dhf -sm.h0o/s near the surface of the Earth at takeoff?

  07.21: A box slides to thevk, rr166iwgt l i kf/+fv72, fxf)agg right across a horizontal floor. A person called Ted exerts a force T to the right on the box. A person called Mario exerts a force M to the left, which is half as large as the force T. Given that there is f1,xafvrgf6kw i/vlfk6,r +gg )7i 2tfriction 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 o 72 pe-bdmzb: k4q9 71dizrwd 2d.ahggf equal length. Assume that on all tracks the roller coaster carts start from rest at the same elev-pdqd 12rggd 7zm d2k7abh49wiz: e.bation 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 belo5-s :xl16euex6 lmgj ow shows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over thg:jxmx1s6lo5ee 6 lu-e tracks 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 cartrolls frictionlesslq yoi ph i.v+xys8f*.7y along the curved track from point A i*oq v78.yifx.s +yhpto point C under the influence of gravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragg5078zwozvwb, gc2a leed across the floor by a rope which makes an angle of 300 with the horiz7vog,ec8w bw2z0 azl5ontal. 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 required 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 ph+qghg s7fm-d3i9z- nd ch m0t512eu wall by a 100 N force as shown. pdhhc+uei 2905q- zm sg1mf7d th gn3-Thecoefficient of kinetic friction is 0.30 while the coefficient 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 horj;6dax(z xy f/izontal patch of grass with a constant speed by applying a force P. y/ x(x;z6jafd The arrows in the diagram correctly indicate the directions but not necessarily 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(. w)f v o8pnzvwy9-;bq2ewts is moving. Which of the fol wsb)f9-z28(ywnopv we. v;tqlowing statements concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleig:k )0ugkrj;q fh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What foqrfkjk ;u0:g)rce is responsible for the crate’s increase in speedup the hill?