99.36: What happens to the iniv k38t1iorov 50bz6g ertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one thphkv0s 8/jo7spz8zz n.3de *q at does not depend on the quantity of matter present. Which of the following properties is NOT an ins/nz0j hvkp.s *e z8p3odz q87trinsic property?

  04.16: A 20 kg boulder rests on the surface of the )l1yg(u nhtwx7en 3fwp/9 w1gEarth. Assume the Earth has mass tp 19xw) wgynfu 7gl1 w/n(eh3 $5.98 \times 10^{24} \; kg$ 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.pqh) bwvkncv6bj99 l c-(i x. :h50crz What is the magnitude of the gravitational force acting on the ear0 bcv-vh :jz).ik (l 9p wnbhqxc6r9c5th by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increp ;jl5 t5w)-in p zse64n7i.dr/hasvbase while its acceleration dwrd4 ivs-z 57eba /ijp nlt5h;) s.pn6ecreases?

  00.11: A certain particle undergoes fs */zwt7 8z*tvtqez9erratic motion. At every point in its motion, the direction of the particle’s moment* qs9fz/*evztt7t8z wum is ALWAYS

  17.14: A block is suspendib;;l.ob-;v.zkhk 2ldpd 8 z aed in the air at the end of a string 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 identifi;8dz2pkik.. dobbl;a;- vh lzes the Newton’s Third Law pair force to the force of the string on the block?

  07.18: In which one of the following situations is the ne6 t,5 nccu,fltt force constantly zero on the object6 cu,,ct tlnf5?

  13.28: An object is in fre 8g5dvazf-c6ze 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 tgvzacf5 z8 d-6he 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 ofnt1 r1299h58p, wxmetessr-5x iywts 30 N, F2 of 50 N, and F3 r 81he, 5 eni5 xsypw21xtm- s9wr9ttsof 70 N, acting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 n f 8ota7w;dv(qewtons can be combine to form a resultant with a ma a7f wt(dv8;oqgnitude of which of the following

  10.06: Which of the following statements is most closely associated with Newtku (m9fvzp7i0 c x8*spon’s Third Law of Motiouk*f70psp 9ic( m 8vxzn?

  95.06: The reaction force does not cancel the action force because::vn1m/j.mtf)f pa1ax

  14.14: A box rests on the floor of an elevator. The elevator is acceleratrc.zsxvbai k3 6z+w fq06j0+y 6w cb4u;/emqeing upward. 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 Eave60w.amjwfce0q c +4z6r3z /q ;bsi6xbk+yurth?

  15.15: A skydiver falls downward th3k0ork4eo o, l kbn/4trough the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance actink/b3ro0olokk n4t , e4g on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher wiwt ;0v(llb wt-th a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exw( w0llb-;ttverts on the bat is always

  11.13: A physics book sits at rest on a table. On top of thek dh2g n)jus0si y)cvl54y/y1 book is a calculator,iy4)kvsy5y1d2 s 0uj/c h) gnl 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 book?

  05.06: The students in a Physics I class were ep( pcyf/+xxd dnm.- 1in lab conducting an experiment related to Newton's Second Law. The collected data-n1p(d +/pe. cdyx xfm were displayed 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 doubledex32 hizy+ry 1 while at the same time the mass of the object was halved,then the accele 1ry+xie32 yzhration of the object is

  96.15: A car whose mass iseu dk.o, s*s9w*zn7t d 1500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magninz sdosk79.* *dtu,e wtude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the roydr2 ; si zpcok4 0y/pb*7sd-nad. The mass of the trailer is 4 times the mass of 2piopybd;4 yrsz-s0nk 7d/c* the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large trac anv6 , onj:k)z-pr. 6bkthk9mv u :y:8-fyxlztor-trailerzm-f:h:j:vt)n 6y.k okpzvkbyna-ru l 6,x 9 8 trucks generally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram sk7m3ti7/nt *r ba v9ibxater at rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequen t b 3xa9v7*tbr/7niimt motion?

  00.13: An object near the surface of the earth wit .r3iij8f*diesp b6zt l:3jj) h a weight of 100 newtons is accelerateii el6j t*zj:s8ji)p3. rb3f dd 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 b(g hzlf3u f1jmw9;rl.y a constant force of 2400 N. Wh(l9rf1w;fmg3lhj . uzat is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/sh8i6iwr ) y.m abrd; xlgkf;+3 slides across a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.8a;k;3r6i).gxwydhm lir+ f b0 N. How far does the block slide before coming to rest?

  95.38: A block with initial veloc2rjpd- 6:va3mp2 ha9lqozx :+)dgq eyity 4.0 m/s slides 8.0 m across a rough horizontal floor before c gqp d9a )+zdlyh:e2vpm6-:qj2x aro3oming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box mnfd;8620picj vz 5wokzs l)ha t5y(6remains at rest on a horizontal surface while a person pushes directly to kh) 5wo6( ma65dzslpcf0y vtz;2i8j nthe right on 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 accelni* f37 (ifhtgerates uniformly to rest on a horizontal surface. The block travels a distancf igf(3* n7htie 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 across a patch of ice at a speed -ec, vpx bw6o.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 tires and the dry road is μ . x.p-,cwob6 ev
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 vfc *f3fst 0qm)+x b;)0nqylxu with its brakes+0x*fqq );b0ftcl)xfy 3sm u n 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 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's brrk)(ybikizqu6a xw uqq;,1. ,akes and skiddinukbw1 6 ,i zuyxq( ;)qkr,aqi.g to a stop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobig6tg+fw n4sp3 le must carefully control each of the following devices. Which of these devices can cause an acceleration in pg4g 6 nfts3+wa 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 isgdib7d wwv3xy)i l, 9; 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surface of the Earth at takeoff?d37yvbw ,; iw 9gx)ild

  07.21: A box slides to the right across a horizontal floor. A persoi/efh -ft*-9sjy rfj/n 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 /j 9- * sey/t-iffhrfjT. 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 coasterj,xsn; wa6e,r tracks of equal length. Assume that on all traw 6e, x;snjr,acks 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 be traveling the fastest at the finish?

  02.28: The diagram below shows three roller coaster tracks of equal len cyz.v2bku+u 0gth. Assume that on all tracks the roller coaster carts start from byzu uk v+02c.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 fr1 hr,wge6cx6bictionlessly along the curved track from point A to point C under wc ,bxe6rg16h 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 dragged a1yd) om b0dvyv :k+u.qcross the floor by a rope which makes an angle of 300 .y+ dqbdk)0: v vuyo1m 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 wduyj8 1nvzr77 6ld 6rnall by a 100 N force as shown. Thecoefficient of kin7 yrvd r 6lnzn17d68juetic 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 mowez5bq9jsyb5(ufzi w/ 2r across 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 magnitudes of the various forces on the lawn mower. Which o (/ bi jf52qywzzu95bsf the following relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crateps/oew4nhj v dv 8)31g on a table. Neither is moving. Which of the following statements concerni no834ds1j/hvg )vpe wng this situation is CORRECT?

  06.15: A crate of toys remains at redizm ra: b2(tg .a-,lost on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fl:o d(g.tz,b-imra 2 aastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?