94.01: Starting from rest, object 1 falls freely for jd(7 uyek6.3q dzvsx;4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object ;vyj z (qd7u3d.6ksex 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final speed of ; jq.zl*x8ew1nwu tso+:z6bf20.0 m/s in a z ujq8w1xs+t*bw;.fz e :6lno time of 15.0 s. How far does the car travel during this time?

  94.03: A ball is thrown off a high cliffy, dga) lr axxd h9j(14r1rv1g with no horizontal velocity. It lands 6.0 sa 411gd,rhxd1 rv j x)a9(rgly later with a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near thehk8ho 14wv;a uj:dls0 surface of the earth is accelerating vertically upward wklo8ua1d h; 0:s4jhvat $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is found to be moving dowxl.ea5h-.o4 go d9yq1*uc h,ni;xaxbnwards at 27 m/s at one instant. If it continues to fall, one second later the objeh.. ,xd1aga ubl o5noi ceh4;qx-* yx9ct would be moving with a downward velocity closest to:

  95.39: A car starts from restyjsy2d9pk3-q ij6f ;x and accelerates at $0.80\;m/s^2$ for 10 s. It then continues at constant velocity. Twenty seconds (20 s) after it began to move, the car has:

  96.17: A ball which is dropped from the top of ckmo:v ca:c;0a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of the bu: c ;cvcm0o:kailding is approximately:

  97.09: At a certain time, an object in free fall has ve22/ou, jszvj*;yt0ijb ej1 snlocity 4.0 m/s in the upward direction. What is thns b;*jjj u,itjo sv 220zey/1e approximate velocity of the object one second later?

  98.14: How long must aqh kw,yni *;wqi.h/p.hokr+g- ,-b: brhog w+ $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling object is found to b3 7 tkb+zkcw.zm8wbu-e moving downward at 18 m/s. If it continues to fall, two seconds later the object wum 3z. 8b+tcbk-kz7wwould be moving with a speed of

  17.02: A small object is released from rest and falls freely for 4.00 s uc2i8u q2 y+hpw7o ;6bkueqk2intil reaching the ground. What was the height above the wph2 qo627ub+i ekqc8yk ;u2iground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched wxcj7ki5 a(e6j dsul2 r,7(castraight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. When the ball reaches its maximum height, which one oaedcxjc(j s(ri 6 w7ku57l2a, f the following choices best represents the magnitude of the net force acting on the ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 kg is tr;9s/8sud q ilaunched straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much time does it take the ball to reachdi;t q9s u/rs8 the maximum height from its launch?

  98.31: An object sliding down an inclined plane has speed 0.40 m/s twom:/:iux vib1 l seconds after it begins to slide. Approximately how far does it trave ix:vbui/1 lm:l in three seconds?

  98.40: Coin I is thrown upwa3wqu-tu5t x.n rd from the top of a 100-m tower with a speed of 15 m/s. Coin II is droppe.-5 tq3 untwuxd (zero initial speed) from the top of the tower 2.0 s later. Assume g is $10 \; m/s^2$. How far below the top of the tower does coin I pass coin II?

  02.04: If a ball is thrown directly up2 zu/eim*vq*au+8r l dwards with twice the initial speed of another, how much higher will it be at ide2rm *u* /v8z+ualiqts apex?

  02.30: A box falls to the ground from a delivery truck traveling at 3f*qes 0 t ycbc,x7j(u-0 m/s. After hitting the road, it slides 45 meters q7c fe0tbs*-c ,yu jx(to rest. How long does it take the box to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 ,s92x m,+fref6ta -d7 eyt2wq k/grpcm/s near the surface of the earth. Afte2t/tfs9g+2, xawem d6kcf7p,re -qryr two seconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different ma km)zf2iqq e,d5hm*s,ss (1m, 2m& 3m) are thrown vertically upward with differe)sd*fq zmm5,k2 hi,eqnt velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank from high to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launcq *,-.xlm1 3upgo-z.n9a af7gy xgw8aqa cy/thed straight upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If object 2 has mass 2M, what is itop 3cu,mx gw* 7aq-lg. ngqzfaya/x8a.1t9-ys maximum attained height above the launch point in terms of H ?

  04.28: A rubber ball bounces on the ground as shown. After each bo 2 ek7z*ycdz/junce, the ball reaches one-half the height of the bounce before it. If the time the ball was in the air between the first and second bounce was 1 second, what would be the time betwekz 2 ej*d7yc/zen the second and third bounce?

  16.21: At 1.94 s after launchzl r+iwt1wzns:/r i(,vp o3l*f 61 xdj, a projectile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial *zl rrzt1 l3d,siw+1xwf n( / 6ip:vojangle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The collisrnv iip g2d588ion of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With gp8 rn5 28iidvwhat speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking garage. One stuxmaw i7 ,,z4undent suggested that to determine the height of the garage, they simply had to drop tennis balls from the top izn7wxm,,a4u and time the fall of the tennis balls. If the time for the ball to fall was 1.4 seconds, approximately how tall is the parking garage?

  05.07: A snail is moving yzc. 6lzqq2; a/m 5kqc fvzw6)along a straight line. Its initial position is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system, the signs of the initial position, initial velocity and acceleration, respectivelya2 qc q5yz6wkq) c. zm6zv/f;l, are

  04.38: A small point-like object is pulled 3krbx34np;i x *,9,f vj1mq6knedpqbdownwards by gravity (down the plane of the page) but is constrained to exactly follow each of the frixr,f ;ip6bjpmqk* 4 ,b 3vq 91dexnnk3ctionless pathways shown. Rank these three paths from shortest to longest in terms of the amount of time (T) necessary for the object to be released from rest at point A and travel to point B. Assume that in changing direction that there is no loss of energy and that it takes negligible time.

  06.13: A rock is dropped from the 1xuldddv)a(uwe.rmir4/ 4y4e 6 0a i xtop of a tall tower. Half a second later another rock, twice as massive ( 4e6i )wy x e0xrma/ 1lu4rdvdud.4aias the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/swis l hi)ub239kwh- d)/cfz2t along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is initially moving at 1 m/s. How far does the cart travel befort9whk2dlshi)2/z cw3)-u f bie coming to rest?

  07.11: A cart is initially mo;qrb;4 eay1uyving at 0.5 m/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is iniye b ruy1q;a;4tially moving at 1 m/s. How far does the cart travel before coming to rest?

  08.03: A dog starts from rest and runs in a strai 9/, 1lb 5j4(p)cxbzgrdzbcy/t5h hqm ght line with a constant accelerbq zrc/5y (hx,hb91pc) b/4l jdg5zm tation of 2$.5\;m/s^2$. How much time does it take for the dog to run a distance of $10\;m$?

  10.29: A ball initially at t wv-9k mrw0w:rest falls without air resistance from a height h above the ground. If the ball falls th:wv0r9k w-tmw e first distance 0.5h in a time t, how much time is required to fall the remaining distance of 0.5h?

  10.38: Two objects bot-v9kcy 9qz:g,xoec gem7l, +v h move and uniformly accelerate to the right. At time t=0,the objects are at the same initial position. Object 1 has initial speed twice that of Object 2; Object 1 has one-half the acceleration of Object 2. After some time T, the velocity of the two objects is the same. What is the ratio of the distance traveled in this time T by Object 2 to that travele g:x lkqcog7cm,ye v+v9e,z-9d by Object 1?

  12.26: An object is thrown ,* veqi5t d qbzn71o2ehorizontally with speed 10.0 m/s from a height H above the ground. The q5zoidv1 e2t q7e *bn,object reaches the ground with a speed of 20.0 m/s. Which one of the following choices best represents the time of the object’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The object remains in free fall unti-v mt iwfg+)m) br, no;3*le,:ivpuajl it ,f;+e: p- lmn3jiuga),vbirm) o* tvwreturns to its initial launch point. Which one of the following graphs could represent the velocity of the object as a function of time during its flight?

  14.03: An object is dropped into free fall. Through how msl)86s ela;ikany meters does the object f as);8 lel6ksiall during the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surj 2nod;2fh da(l7msx7 face in a time of 12.0 s. What was the initial speed of the box when it started its slidejs7(fx22od l dhna ;7m?

  14.07: Starting from rest, a cart uniformly accele3. kii r/mcqz(rates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does the carkqri 3(. mzi/ct move in this time?

  14.16: A toy car initially moves to the right at 60y:idiphp2t y x4-c bl:.x +yv:.0 cm/s. Five seconds later, the car is moving at 40.0 cm/s to the left. The total displacement of the car during this time is 10.0 cm to the left of where it started. Which one of the following choices yv 2dxytxb:i+4y p h.: l-pci:best represents the magnitude of the average velocity of the car during the five second motion?

  14.17: A toy car initiql g1b hgf8u1fz3rib+w-:kp+ally moves to the right at 60.0 cm/s. Five seconds later, the car is moving at 40.0 cm/s to the left. The total displacement of the car during this time is 10.0 cm to the left of where it started. Which one of the foll lp fqkzrf-+:bug bg3w+ 811ihowing choices best represents the magnitude of the average acceleration of the car during the five second motion?

  14.33: An object moves w-)x- obq(qln xith constant acceleration starting with velocity $v_0 = 5.00\;m/s$ and ending with a velocity of $v = -1.00\;m/s$ in a time of 3.00 s. For this motion, what is the average speed associated with the object?

  15.05: An object initially is moving upward while in frek4 4(ipb4rn5xhfxpee f;qz 1 ,e fall. Which one of the following choices best represezk 4ix1nxb(ef pqp;5fh 44er, nts the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 second trip ibwf8 pjo/zo- 8n two stages, I and II. The average speed of the entire trip is 10.0 m/s. For stage I, the object moves with a constant velocity of 6.0 m/s for 12.0 seconds. What constan 8jpb/fzoo -8wt acceleration must the object have during the 8.0 seconds of stage II?

  15.32: An object moving along a line waz7f+a;3i-z;lemh13 q ff y7ezicd 9completes a 20.0 second trip with an average speed of 10.0 m/s in two stages. During stage 1, the object moves with a constant velocity of 6.0 m/s to the right for 12.0 seconds. What constant magnitude acceleration f;z iqzm cwd hf7lyfaz1e e3379a+i-;directed to the left must the object have during the 8.0 seconds of stage 2?

  13.33: At the top of a high cliff, a small rock is9sb;t0h7g ofy 5oa gwk0-mwz5 dropped from rest. A ball is launched straight downward with an initial speed of 36 m/s at a time 2.10 s after the rock was dropped. When the ball has fallen 28.0 m further than the initigyo zgbkow;f -50ma5th07 s w9ally dropped rock, what is the speed of the ball relative to the rock?

  16.36: On a straight road, a self-driving car races with a robot. The robot g4ieztnk1r 0 --7wc qtx-6ut) qaam.e accelerates trqa1 n g cwz7qx ai-6e)0m.u4kte--tat $8.50\;m/s^2$ until reaching its maximum constant speed of 15.0 m/s. The car accelerates at $5.60\;m/s^2$ until reaching its maximum constant speed of 25.0 m/s. The car and robot start from rest from the same location. What is the maximum distance that the robot leads the car during the race?

  17.44: A ball is launched veu idlrxo*jx6q)u0 3a. rtically upward. The vertical position of the ball 0.70 s after release is the same as its vertical position 4.10 s after its release. At what time is the object first at a verticarq3. )juaox6ui*l 0xdl position that is one-half of the maximum height it obtains during its flight?