94.01: Starting from rest, object 1 falls freely for 4.0 seconds, and object iwku5,.o4 qqm 2 falls freely for 8.0 seconds. Coqqu. 4io5,km wmpared to object 1, object 2 falls:

  94.02: A car starts from rest and uniforml 15vc/s csprj9o.ka .ly accelerates to a final speed of 20.0 m/s in a time osa l9oskcv1 j/5.. prcf 15.0 s. How far does the car travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. It landfjz 5g7vm1f tj .a;wn9s 6.0 s later with a velocity of fa5zjgf1tv m9j7w .;n40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth d-7pm-pol zcfmdb(*l d19xa2is accelerating vertically upward at lb9-xz2* -(cdd1o pl7pa dmfm$10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is found to2vy 1qbz9v nflqj3o:n s9/ed btwe8 0) be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be moving with a0ebqwtjsezdv39 /1qbv9 :oly8n 2nf ) downward velocity closest to:

  95.39: A car starts from rest and acce khop4h6(u1 bhlerates 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 building sruaw 1p lr//5ntrikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of the building is approximately:arpu5wn 1/l/ r

  97.09: At a certain time, a:;ld l+opc66 ar9o kbun object in free fall has velocity 4.0 m/s in the upward direction. What is the aco6po: a+d6l9ur b kl;pproximate velocity of the object one second later?

  98.14: How long must a 1m:qn zdo3fh4 $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling objecv-9 qvo:g1 hnqeca0+gt is found to be moving downward at 18 m/s. If it continues to fall, two seconds later the object wo9hq ga0+ovcg 1:vq -neuld be moving with a speed of

  17.02: A small object is released from rest and falls freely for 4.dym *+-iqhz: x00 s until reaching the ground. What was the height above the ground from which the object was released?m:ihyz+-q xd*

  11.06: A ball of mass =0.100 kg is launched straight upward so pa omyq/. 0saqh0kr (8that 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 magnitude of thh /(r. oqks00maa8ypq e net force acting on the ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 kg is launched straight upward so that it ris04a(jel26 esr n/xwgi es to a maximum height of 12.0 m above the launchni 4swag026j/rl xee( point. Ignore air resistance. Approximately how much time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plane has speed 0.40 m/s ot0z 7d-jfuu8 two seconds after it begins to slide. Approximately hzojtuu0-7d 8 fow far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 1000vl 7 +ab(yvkp1 );ljqcjdzc kbbgx +5kob*/3-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s later. Assume g v3 alj7;kcblo/bjpbbk(5)kx1z +q dg* 0y+vc 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 f 2mw otqg9o2,rr(*js directly upwards with twice the initial speed of another, how much higher will it be atj( 9qw2o,rrs fo*2mgt its apex?

  02.30: A box falls to the ground from a delivery truck traveling at 30 mw*54 e3 soll9d(2 (pce dnanpt/s. After hitting the ls w*t dpd53na9opl2e n4c((e road, it slides 45 meters to rest. How long does it take the box to come to rest?

  03.29: An object is thrc4v,djl q4vwub(.e u c /ffe(0own upwards with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, velocity and accelerati uf0cv dev(bj,4(fu/4e w.lcq on?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m&zv6r b7/zx3 at 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank from highz7bx 3tzar6v/ to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight upwa xu7we 3ml8;q)ht *.u;tjm1ddlbjg6 ard with identical linear momentum. Object 1 has mass M and reaches a maximum height H atmwt68) lg71ax;jlhd d mq3*;.je uu bbove the launch point. If object 2 has mass 2M, what is its maximum attained height above the launch point in terms of H ?

  04.28: A rubber ball bounces on t6t/pvfhon:qk a; ;0hthe ground as shown. After each bounce, the ball reaches one-half the height of the bounce before it. If the time the ball was in pat ;tv fq :0ok/6nh;hthe 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 lausvb:)hh-dz x 4lg 00gmnch, 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 angbmv0):0hgsx g h ld4-zle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical qi 14ti17u:txdu9;bc(pxmrhr n2 o( q+5k irwcliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble k1ph1tr id2 qurux:c+o9rbt(nwi ; 7x 5mi(q 4is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking garage.z ; tyj7 q*t-tvwgrn8/ One student suggested that to determine the height of the garage, they simply had to drop tennis balls fryr/7t*;gt vj-wt nqz8om the top 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 along a straight line.3/:qm yhbd/.vazt+r9 0o haa4m0ucm j Its initial position is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordiyt jmz mcb.v 0 r0/9d/+3a4amahh uo:qnate system, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like objev-seb 3 n/lkw,ct is pulled downwards by gravity (down the plane of the page) but is constrained to exactly follow each of the frictionless pathways shown. Rank these three paths from shortest to longest in terms of the a-bel3,s v/ knwmount 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 droppi8iu w qemxcul9v)r,h ,u 9;v*ed from the top of a tall tower. Half a second later another rock, twicvw;ui, *h )8,c uql9u ximve9re as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The cart come4dt2/5e) i5shj8 l duvgg7 ggms to rest after traveling 1 m. The experiment is repeated on the sl g7jtd45 sg gugm)v825deh/ iame 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 initially movingt/ ,z-c8kz lwd*ficw6 at 0.5 m/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeatedclfzd/k-8w* c itw,z6 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?

  08.03: A dog starts from 8ru s*yb v;nvu5 uye,3rest and runs in a straight line with a constant accelerae rn,5v 3bu8uu;y*v ystion 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 fabj(ao v s cvsds ux.20fv,d-3b2 4t/rnlls without air resistance from a height h above the ground. If the ball falls the first distance 0.5h in a time t, how much time is required to fall the remaining dis 0 vao,(s/fdb32 rvsxn v.tjud4c2sb- tance of 0.5h?

  10.38: Two objects both move and uniformly accelerate to theb)tpw * /umx(n 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 *)w n( muxpt/bhas 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 traveled by Object 1?

  12.26: An object is throw v,w;eib,7atnn horizontally with speed 10.0 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 choin,aei;7bw t, vces best represents the time of the object’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown straikve6 pk-muo0xoctg(q; p7+p( ght upward. The object remains in free fall until it returns to itsou;m-co+p6p( ex0 v 7pqkg kt( 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. Th8)u g/eh* qee/x)xnp qpm;vp 6*,qwb lrough how many meters does the object fall during the first 3.00 s/mw/;q,8pg)epp*q e q6l) nu*e xxb vheconds of flight?

  15.02: A box uniformly slides 7.50 m to rest il ak6hinm*.2 across a flat surface in a time of 12.0 s. What was the initial speed of the boxih*im62ka .l n when it started its slide?

  14.07: Starting from rest, a cart u63ld o.z7. goluty*q pniformly accelerates to a speed of 7.60 m/s in a timel gtyqlou.*.7zo36 d p of 3.00 s. Through what distance does the cart move in this time?

  14.16: A toy car initia 90ud,g. fg0 azyz b:we7(pzeplly 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 wue7yzaz09f gp,:z.g de b(pw 0here it started. Which one of the following choices best represents the magnitude of the average velocity of the car during the five second motion?

  14.17: A toy car initially moves to the right at 60.-55q oinrezd2/fq(:2 e3d9(c l8pdam fphd vp 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 avera8pdm2ndpz(qq:p53f e9h ado/vc- 5(r2feidlge acceleration of the car during the five second motion?

  14.33: An object moves with constant acceleration starting wib) la5x(n ci2t-l9rxb th 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 initiallyc eop0m 2t,ow)6;by kh k,,uej is moving upward while in free fall. Which one of the following choices best represents the di c0 otwe2o6u),y,b;kmk hp,jerection of the object’s acceleration during its flight?

  13.26: An object moving only to the right complet +(y oqsz:b 0om(5bhipes 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 y h:o 5bi 0(o(+szpmbqmoves with a constant 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 20.0 seqo1 babug2(,eua/ 1mfcond 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 directed to the left must the object ,a21mqau1bfg(ueo/ b have during the 8.0 seconds of stage 2?

  13.33: At the top of a high cli o4 l66bf .9+asi -xnaepx2pfnff, a small 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 the rock was dropped. When the ball has fallen 28.0 m further than the initially droppe . pan+fxbpox6n249ef6 l -aisd rock, what is the speed of the ball relative to the rock?

  16.36: On a straight road, a self-driving car races withp(gx 2iqwwxusrs;a74z y5 z++ka: e5n a robot. The robot accelera n q;a:axu w5szep++sk47zwyg5xi 2 (rtes at $8.50\;m/s^2$ 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 ofdra3lcy 3bgaj1) 0b4 a 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 vertical position that is one-half a)a0 yjb 4g1da3 brcl3of the maximum height it obtains during its flight?