94.01: Starting from rest, object 1 fdyt)xs :(g ,rh1 y5jtmr9mdn9bw9 j7balls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to g)twd, 9mxt bsnm : 719b5jj(y 9yhdrrobject 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final speed of 20bib el;e4;mlg u k.,c+.0 m/s in a ;4l.ul ;e b cbgmkei,+time of 15.0 s. How far does the car travel during this time?

  94.03: A ball is thrown off a high cliff with no horizonta0..cjuu ckl/zxrx16w 7e - togl velocity. It lands 6.0 s later with a velo /7tec. u x.zj-lgou60wxkrc 1city of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is accelerating vertically upward smxxgm/o7*h 2 at mhmxs27 gox*/$10\;m/s^2$. 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 t *xou m6:-siwdownwards at 27 m/s at one instant. If it continues to fall, one second later the object would be moving with a downward xmi6wo t:us-*velocity closest to:

  95.39: A car starts from rest and accev p z0.eqf1wvcy3) 7wslerates 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 a buildiu;ee.ggs i /t3rggqbq6spl ( yzh/72evq;e34 ng strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of the buitr /q;2e6 v;supe h37gg ls.y(g/zb eq3q4 eiglding is approximately:

  97.09: At a certain time, an object incflb n *c/ f3smpcr*1,uann+4r 40kw q free fall has velocity 4.0 m/s in the upward direction. W* c3b r14n+q rc/c0kfnpu4 wn*fma ,lshat is the approximate velocity of the object one second later?

  98.14: How long must a h-re/h2o + xia$2.5\;m/s^2$ 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 be moving downwdg) rin*te gu(ke95 9l0bfv*eard at 18 m/s. If it continues to fall, two seconds later the object would be mo 9eb f5ld0iuv)t(k n9gr*e*egving with a speed of

  17.02: A small object is released from rest and falls freely for 4.00 s untirbe w)yv04la9:ju u v212uuw kl reachin0u) wa2jy:lbuwk9v4r2ue1vu g the ground. What was the height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straighjyl()2 l i2+e ppjqc1tt 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 of the following choices best represents the mal l2y( pjpjc1q)t+e2ignitude of the net force acting on the ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 y7bd, x)wbxv4 kg is launched 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 reach the maximum height 7xb )d,vbx yw4from its launch?

  98.31: An object sliding down an inclined plcs z(uu63sql4 ycl( 1oane has speed 0.40 m/s two seconds af 3 lyl6(qs1ozu (ccus4ter it begins to slide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown 2x12zc dmzw-0s7dnav2nv8n o upward from the top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the to2mn oz d1za7nsx-vd8 22cnvw0p 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 upwards withzxg0 m o3w(gq1 twice the initial speed of another, how much higher will it beg q3o(m0xw1gz at its apex?

  02.30: A box falls to c0jh;su(u,+ s-x eylethe ground from a delivery truck traveling at 30 m/s. Afteh0(ue-u,lx s es;cj+yr hitting the road, it slides 45 meters to rest. How long does it take the box to come to rest?

  03.29: An object is thrown tahzvo 7fl8a .jjm zk3m4:*;h upwards with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displm4aoj; j m 73kt: .ahhlzf*v8zacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) arzjf co-9;mnt(+jv7 8dpi*wav e thrown vertically upward with different velocities (1v, 2v& 3v resi(zv;d j+ o*t9jmnf8acv7 -pwpectively). 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 l+94x6ki f fediaunched 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 its maximum attained height above the launch po d 4fx69kiefi+int in terms of H ?

  04.28: A rubber ball bounces on the ground as shown. Afterplvh0 97,bvynyo pl,8 each bounce, the ball reap9vyl,07p ,y v 8ohblnches 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 between the second and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fall achieved its:uo ln 72 :tgv*mn8-fwyc3ed wc)dc,a minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launcn* c-wn7cvtg2) , 8d3cyuwlmeo ::daf h from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The pbm.31yh ht 5pcollision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit the ground?my1hp3 b .htp5 Ignore air resistance.

  06.03: Three students were arguing about tmgt1(vi qd o)7he height of a parking garage. One student suggested that to determine the height of the garage, they simply had to drop tennis balls from the top and time the fall of the tennis balls.m(d 17i qovgt) 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 along a straight line. Its initial position is x0 = -5 7lcg5ald *;khmeters and it is moving away from the origin and slowing down. In this coordinate system, the signs of the initial position, inicl hd ag;*k5l7tial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled downwards by gravity (down cju6)1. mni9rg)tvqhthe plane of the page) but is constrained to exactly follow each of the frictionless pathways shown. Rank these three pathsjh9 1ntu.)vrm qc6i)g 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 top of a tall tower. Half a second later anot(2 m mm2pnuf7 b3kqc ick pne62t:*1sfher rock, twice as massive pim6:m23s 2p(1neb cnf*2c7 mk fkqt uas the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/sxu5f* (be wm. +qj5nvp along a track. The cart comes to rest after travelin pbmfjv5x5 q(.+*weu ng 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 before coming to rest?

  07.11: A cart is initial3ge-r xvuspyu35 p0 /yly moving 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 initially moving at 1 m/s. How far does the cart travel before coming to rest-p 5ugrxu3 3/y yps0ev?

  08.03: A dog starts from rest and runs in a sqt-e yo88-u*w0 vt(z hqaz(qi traight line with a constant acceleratio q-qha -80(v(zyowtue*i tzq8n 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 rest falls without aug+gp+ +alv )rir resistance from a height h above the ground. If t+ar+plv ) gu+ghe ball falls the 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 both move and uniformly accele*q.hoy s, jmfr 2e6+arrate 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-hjs rae h ,m*oq6.fry+2alf 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 traveled by Object 1?

  12.26: An object is thrown horizontally with speed 10.0 anfg.j*b +l-e m/s from a height H above the ground. The object reaches the ground with a speed of 20.0 m/s. Which one of the following choices best represents tjeb fg*-a nl.+he time of the object’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The object rdy2 +/6rcwt afemains in free fall until it returns to its initial launch point. Which one of the f r6cy2 /fwatd+ollowing graphs could represent the velocity of the object as a function of time during its flight?

  14.03: An object is dropped into free fal29gqg(fq)q3t83 jcdqk h 0 zeal. Through how many meters does the object fall during the first 3.00 seconk8f jd)acqhegq(20t3zgq q 93 ds of flight?

  15.02: A box uniformly slides 7. u,o17g txqet23c ngc), k)jrxtlnx9+ 50 m to rest across a flat surface in a time of 12.0 s. What was the initial speed of the box when it started its slidec+, xlcgno )2)trk,qjg9 31 tun xext7?

  14.07: Starting from rest, a cart uniformly acceler:ary5o wc z)1lates to a speed of 7.60 m/s in a tim c5wral1z)yo: e of 3.00 s. Through what distance does the cart move in this time?

  14.16: A toy car initially moves to the r05djga2 +ag v,pwd09:wpxga c;nx+ zlight 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 following choices best represents the magnitude of the average velocg xw:gv9dl dn2g5cxpa,j; za wp0a++0 ity of the car during the five second motion?

  14.17: A toy car initially moves to the right at 60.0 cm/s. Fivem+qdq7ydg6n4k murk02 ,u8 u h 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 best represents the magnitude of the average acceleration of the car during t 0g2+u4ddh67kumnm u ,q8qrkyhe five second motion?

  14.33: An object moves with constant acceleration starti9a,qsxp 2s 5bing 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 free fall. Which one of thln6ogdmkm 0qs- i9 h+6e folloi 0q+hgos9ml-dn6m 6 kwing choices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving on/px v yw zt**xn)2-bggly to the right completes a 20.0 second trip in 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)nvzx/ypxgb t -2 **gw velocity of 6.0 m/s for 12.0 seconds. What constant acceleration must the object have during the 8.0 seconds of stage II?

  15.32: An object moving along a line completes a uqk.2 lfx 7ovw2tdl5420.0 second trip with an average speed of 10.0 m/s in two stages. During stage 1, the object moves with a constant v tq7fd2lo2xlvk 5.wu4elocity of 6.0 m/s to the right for 12.0 seconds. What constant magnitude acceleration 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 s3 5h i/npvd;;)zmkp zamall rock is dropped from rest. A ball is launched straight downward with an initial speed of 36 m/s at a time 2.10 s after zimna h5zv/ k ;p;p)d3the rock was dropped. When the ball has fallen 28.0 m further than the initially 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 robo h-zy5:khlja tos*a 0/t accelerates a- a klyto/*hs0 z5h:ajt $8.50\;m/s^2$ 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 vertically upward. The vertical position of the bal x .4*g0-qdrwmjpe 6bwu4(uell 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 ve6w*p4 mx w.e qu-lg jd4eub0r(rtical position that is one-half of the maximum height it obtains during its flight?