99.36: What happens to the inertia of an object:ns t:vgfx3s wc*ks7 3 when its velocity is doubled?

  02.14: An intrinsic property o9q i-q p( nf*n2qh(iuvf matter is one that does not depend on the quantity of matter presentnqv(i-n(uf2qip9 q h *. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Ehycvos* k7 ,mj5i/mvnbn :ik t5y()7darth. Assume the Earth has mas7/dvnm ib vn ym*soi( yktk:7cjh),55s $5.98 \times 10^{24} \; kg$ 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 nujzxym8v*qwg90tb +s qw7s) 7lk.,hkear the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the s v0l7wjytkwb u9+h)xk,z*q8 smq. g7sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while its acn5 dp 8wfs1pf9m)fmc+celeration decreas9mf) dpm5sf n8+1wfp ces?

  00.11: A certain particle undergoes erratic motion. A r4i8dp/0j9t-cklgfi+kvb g7t every point in its motion, the direction of the particle’s momentum ij g70di /cv9tlp4kk gr b-8f+is ALWAYS

  17.14: A block is suspended in the air at the end of a strink l v uk;7gqukf6.+ii+g 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 correctl v6.iqk+uikgf ;+ukl7y 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 situations is; h xl6jb/abh57zf aj6 the net force constantly zero on t hzja/6 7x65balh jfb;he object?

  13.28: An object is in free fall close to the ground. A person int xni)tv6dty p8ijd 1d31q8dr 1y56ubnervenes and slows the object unj5duddr6 bntvp18i 3x6) 1i dy8ytq n1iformly 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 magnitude of the acceleration from gravity is g.

  98.03: An object in equilibri- h jgeiv5n6 x+j5yvg*um has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultant ofF v5 +egvgi*xh5y6j-jn1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtonjibu; p*ih1 4 k1m5eceny )zg-s can be combine to form a r4ei;ej 1kpg-u mz5yb i* ch)n1esultant with a magnitude of which of the following

  10.06: Which of the following statements is most closely associated witr* ,vh;zur7q.mft9ux h Newton’sh7;ru ,vmu* zf.t9qrx Third Law of Motion?

  95.06: The reaction force does not cancel the ynprh)w;3yw4wz/ 4m qaction force because:

  14.14: A box rests on the floor y)/ 5*64mw djauh j 7fwh-atqlof an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitaj5jm4)7h- /dw6yf la*hqt uaw tional force acting on the box by the Earth?

  15.15: A skydiver falls downward nid9i47na el3 through the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiveaie n79dn4i3lr during the fall?

  06.08: A baseball is thrown byyo s:v f(ppq;- a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball (p-yovfs:q p;exerts on the bat is always

  11.13: A physics book sits at rest o hm 8-nxto q74t(qyq*yn a table. On top of the book is a calculator, also at rest. Which one of the following choices is the Newtomx*q48 qq(h7oyt- yntn’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students i2dnn a (0w9uaa 31dpsin a Physics I class were in lab conducting an experiment related to Newton's Second Law. The collected data were di0psada(w un31 d 2ina9splayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an ob.8jh/ 1ctcdygu4lt u1 ject were doubled while at the same time the mass of the object was halved,thenu.jth81ud1c tgcly /4 the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformh + 2sru r(j*mk/ryx*ply from rest to a speed of 20 m/s in 10s. The magnitude of the net force accj(y2 rmhr k*+/pux*srelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The/q ha)j62t1x8z qbsjj mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer a/a xhj)qs1jq8 jz2t6b pplies on the tractor is

  99.16: Which of the following phij4vg w90q-g avk8p/rinciples best explains why large tractor-trailer trucks q -iv4w9/kv g8h0pa gjgenerally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 3ln8zld0ixobodcg(lp1 y0 (l 6y +yu72 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement descrinzl00 dlpi1xg( yu y 3l(dyloc+bo678bes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 nb634)tfdoq .):dnxwr fd .dppewtons is acc dq3 .4)6dpo:rft)f.dp wnxd belerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mak9zmod ut d6.1/uj1vzss is 1200 kg is accelerated from rest by a constant force of 2400 N. What is the speed of the car 8.0 s a. 19vzo d6tdu jku/1mzfter beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s sli3z wz1yvuh)d gsos*+,des across a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the block slide bef,ysw o g 3uhzv1*s)z+dore coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across 4krs:x-r xjt 9a rough horizontals49x x jrt-k:r floor before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a perslf:5 gi frmh yf3y) nb**hp9q,on pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the box and the surface is m*)9lfh: ,rf*f 3ipn 5 ybqyhg$\mu_k$ = 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 accel4y6 ps/lxegr. erates uniformly to rest on a horizontal surface. The block travels a distangrp4/. sy6ex lce 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 qohua4xj )2,j7zw7gn 2nj)owu p(t ;om slides 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 friction between t,pwgjj 2twj2 h4z(aq) n);o7un o uxo7he 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 ,vb0l40 r6 by3fl 6,erqu umrf *akx7cice at a speed v with its brakes locked. It then hits dry pavement and sk0, c0y7rkv3*4ul6xuarlqf6 fbe m, brids 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 make 0vxbowo pkhw)8:d:7 ss an emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had been trw 08hkpw:7)s:dvoxob aveling twice as fast?

  99.39: The driver of an automobile must carefully con,:q9wouz:jka3x s j; btrol each of the following devicewa j,oj3zq b9s:u x;k:s. Which 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 newtons is 2400ox)*p,d jsbk 5pcy q41hqrtzk)q 89-o0 newtons. About,ptb4q)yh5kxkd8 1cpo9 qr *qz)-j os 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?

  07.21: A box slides to the rv xh-sna.6rn .j-j1zf ight across a horizontal floor. A person called Ted exerts a force T to the right on the box. A personh16arj.- .n xjfzn-s v called Mario exerts a force M 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 equal c axs 3tly hn-(.jw fx )84w/r.stczo*length. Assume that on all tracks the roller coaster carts sttxs j .)xr3(y w w*/-c8zc.tsfahlon4art 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 bekp 9b; l6pxe7hlow shows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts b9hl7x; p ekp6start 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 frictionm+o 7 *x(wdngmcqb1 6n b*;(ylxkygx5l,ty d 5lessly along the curved track from point A to point C under the influence of gravity. What would be the direction of the7 ( ygt+gybb16ly( nx*l5xnd, wmckd5m ;qox* cart's acceleration at point

  02.40: A box with a mass of 50 kg is draggesb4 qkc7x x9yz ..30 t4puzhbjd 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 0.uzjzbc9pqxsx7.h tb4 k3y4newton 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 pu.qthw)h2+d k tshed against a wall by a 100 N force as shown. 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 w.t) +2kthq dhafter a time of 1 second?

  05.10: A homeowner pushes a ej za2wwl phs0q 3-(1.l4zrxelawn mower 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. Wzespx-0 3ll(4rwaw h 1jez2q.hich of the following relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a cratkzv4 v*ijw l81 os;35vh hgvi:8 zs8ole on a table. Neither is moving. Which of the following statements congs1kj:583w*zvl8s ;v vzl8hvo oh4 iicerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pulled aflb0e4 y 4: *rxdx6+e0cast.m*om peup a hill with an increasing speed. The crate is not fastened down os4fde0rpe.xm4 b 0c*:*m t6 ae+xl ayto the sleigh. What force is responsible for the crate’s increase in speedup the hill?