99.36: What happens to x(1;c 2vot7u2r xxbc ethe inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that d mp -lx2fkcx(3oes not depend on the quantity of matxmc3l2xp -(kfter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume:f1dt-u(ov6)7 s gyvqfqkr3 t the Earth has massq :3vft q)oy-s6(g tk 7dvufr1 $5.98 \times 10^{24} \; kg$ 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. Wen/6po5czb4.t x k8c5ht9gsd0 +mya khat is the magnitude of the gravitational forcet cpc40569tomdnyg eh sz/a.+ 8xkbk5 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 in1ima/og j+. rts acceleration decreases?jr+mg1 /oin.a

  00.11: A certain particle undergoecz,f jtr6 f/t *5dda;ps erratic motion. At every point in its motion, tdp;6t az/*t,dfjrf 5 che direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a ped (z ao.(gi.g3sys9l krson. The person pullkasg .ygsl9o z (di(3.s 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 pair force to the force of the string on the block?

  07.18: In which one of the following situatio-py;tez8o( to69g:x pztdzl3 ns is the net force constantly zero on the tpo (p oz8d-;zylzg t :tx369eobject?

  13.28: An object is in free fal+ bpk .xye,5)lzli4 qzl close to the ground. A person intervenes and slows the object uniformly to rest. Which one of the following stap. )e ,kl5lzzi4bq+yxtements 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 magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, F2 of 50 1q6 t.-2sms nw6hylla N, and F3 of 70 N, acting on it. The magnitude of the resultant ofF1 and Fs6mtla6. 1nhy 2s -lqw2 is

  01.07: A force of 6 N4jo;t fn uso8/iip g3n;;rr.i64b rq kewtons and a force of 10 newtons can be combine to form a resultant with a magnitude o6uijrobo;nptkg r; .ri n3i; 8 4qf4s/f which of the following

  10.06: Which of the followi*qqu s7:xhl-. a /g(5hcekxmm gh :qe*ng statements is most closely associated with Newton’s Third Law of Mo 5mksu(m.x*: -g /hq7qx*chleq eha g:tion?

  95.06: The reaction force does not cancel the action force9(s lg -mwh2ue because:

  14.14: A box rests on the floosd hu( pfxhp95i+i 2s0r of an elevator. The elevator is accelerating upward. Which one of the following choices bei9+02sup dpx5f( h hsist 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 with constao3;dzmed ; jy,nt speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the sk ;mj,y3oe;zd dydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. Th m sleqil2l3;*e batterswings and hits the bal*;2 lie 3lqmlsl. The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book 6l( wgda: h+nwsits at rest 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 t( :w +6lnwadhghe book?

  05.06: The students in a Physicqh9t /kghkgfsa2b 7 2g)vx-t7s I class were in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the gr fqgag/h7sxkk7t29g2- h bv)t aph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were dou 7mfemckcdit-gp6/ 56bled while at the same time the mass of tm t- dgc/kfic6 56m7pehe object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uhsd (i *)jn9 l*xweak.vtln-p /)(pnw niformly from rest to a speed of 20 m/s in 10s. The mt) hdj x/pn l-*piweskv(*n l9a()wn.agnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is travells28 z)t 5uxl z/ bv32dw.yqgiing down the road. The mass of the trailer is 4 times the mass of the tractor. Ifdblutgxqy2z5 vw.s)2 zl8/i3 the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following princirb;d78 f*jr zdples best explains why large tractor-trailer trucks generally d;f*j 7rr bzd8accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skaterkp q s;r/g4gu418ync i at rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which sup; n41 iqkgg4/8yrc statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 2j10y xf8 ;)pzrxs9 -hw(qyto a6echy newtons is ac9) 2 8z;yhyy xx r (w0cqahsfjte-p1o6celerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by a constant( 15,jis bqvwa force of 2400 N. What is the sp,jv51qisw ba(eed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough udfr6x 9 xqpdqo((3p;horizontal floor before coming to res qp6f r3qup(xo;9d( dxt. 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 ve/ s2wpnd z:g-qxb(4j blocity 4.0 m/s slides 8.0 m across a rough horizontal floor before coming:bj(pxb2nw d4sz - /gq to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a pers. )n0p1t xtv6m nx7b9c ep9je3fqn t.yon pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the box and the surfnnjp vc q 7fyn0.p99bxe3t6 1mxt).teace 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 al4;hpt2e 9wxj /vl; vwccelerates uniformly to rest on a horizontal surface. The block tra2/xt; lv;hew 49lvjpwvels a distance of 12.0 m during 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 acros*(3;( y ea;jndc scmaus a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the t(*a(scc;nm ;eda yju3ires 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 slj03e zy- skn-s fcnf:7wtr(4cides across a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic frictiows-zcjt7fn y0re kc-ns:f(43n 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 on the car'jw. gc+,wq e3qs brakes and w.j,ecqg+3q wskidding to a stop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobll v7yrai9tymhc0/,*h m5jxss 76y1 m -d8uj uile must carefully control each of the following devices. Which of these devices can cause an accer/ys79a vd8ijslx7yyhjm l -0th,u* 6c u5 m1mleration 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 newtonsj.tiid.v 0s v0 is 24000 newtons. About how much time is needed tst0 ivj..d0 vio increase the rocket ’ speed from 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right 64h2 jrgeql j3across 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 thq6j erjl3g h24e 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 traho 7(em(k1ie2dv r72huymgf 4w(l *racks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the trm1aeiw* 2 r7er (u4hy7hgmv2 fl (kod(acks 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 tracks of eq*o, -ng7e/j/phdf v7 hnllmb*ual length. Assume that on all tracksmf7n-jg /d/ho*e ,*7vlnbphl the roller coaster carts start from rest at the same 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 reach the finish first?

  02.29: Assume the rollercoaster cartrolls frictionlesslyxbb3;x1t 3;aurlsqn( *b- l pi along the curved track from point A to point C under the influence of gravity. What would be thlrx btabbs; nupql;1i*-x3 3 (e direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the floor by a rogscl6q l+ /jz rxr9;s.pe which makl lrj6/.;sqxz+cs r9ges 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 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 wall im antk/ m: 2/6qv;inlby a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.5;i6nnli/mkqma2 / t:v0. What is true of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower a+:x 4 aj8yym4vjzn(i. nzw.us cross a horizontal patch of grass with a constant speed by applying a force P. The arrows in the diagram correctly indicate the directions but not necessarily the magnina4:8+( y x.ijn4zms yj .wuvztudes 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 movingwsiou /+/z z0)z ssf(e. Which of the following statements concerning this situaz+o()f 0s zs/ iesuzw/tion is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is b0*ejpz (5;iyyh gzu1pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’syy u*p0hez(15;izb j g increase in speedup the hill?