94.01: Starting from rest, object 1 falls freely for ;xn,wxuw1j 94vauyf0 3z+x4ap ,aqed 4.0 seconds, and object 2 falls freely for 8.0 sf1d4uwx,aqe3,w 09 yvau +x ; nz4paxjeconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final8qou:ath r c5:s0qq+g speed of 20.0 m/s in a time of 15.0 s. How far does the car o s:0+gq 5hc:8uqqart travel during this time?

  94.03: A ball is thrown off a high cliff wi,(g2/q us9 vh2pnrppi7 d8.jwf7vqq cth no horizontal velocity. It lands 6.0 s later9ucd7q,2f p p hvw 2.q7n(8gs/qr pjiv with a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is acc9 f*itvu 3fxo9elerating vertically upward axfovi* 939utft $10\;m/s^2$. 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 downwards at 27 5jdc4 r+9 ubegm/s at one instant. If it continues to fall, one second later the object would be moving with a downward velo9jbr cu45 de+gcity closest to:

  95.39: A car starts from rest and a*g5va qcsd c66mq;q)dccelerates 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 stqhdg0, n( tg4rvi p25mrikes the ground with a speed of 30 m/s. Assume airh 0t, g5p2dv( 4qrigmn resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free l-m1u:4olbn7rr yrw : fall has velocity 4.0 m/s in the upward direction. What is the approximate velocity o1nu:my7rw:4olr rl -b f the object one second later?

  98.14: How long must a - yju+ 8,towh2omhlr tmbh,4;$2.5\;m/s^2$ 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 dzu +*hl) .xdivownward at 18 m/s. If it continues to fall, two seconds later the object would be mo dzu)i+h* xlv.ving with a speed of

  17.02: A small object is released from rest and falls freely for 4,i qchr( y f5+uyz8r;w.00 s until reaching th w+,5ur cyry(8qih;fze 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 straight upward so t5*pwt+ (g cyxzhat 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 y(p5 wg* +cztxchoices 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 launched straighta+c lst ke8 4i,4+*uh23n- rcbzs:ovhhy4 gly upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much timk4sc n+h sht4o8r 3+yg,elu: yh-2*iabcv4zl e 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 two se1rj fb m:j0ju4mmebp6z1au, pw76dr:conds after it begins to slide. Approximately how far does it travel in three sr m1br,07ujba4 6 dp6 mz:: jw1fpjeumeconds?

  98.40: Coin I is thrk )xow(ss0a,tpz(tq + own upward from the top of a 100-m tower with a speed of 15 m/s. Coin II is drqtz) xw0(ssp(+k, otaopped (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 upwards with twicdacqii(txa8 2d 3)b a( p-e lae8s4rk1e the initial speed of anothec-aeex(t 4(dbp aa3l2 i1qrdi8)s a8kr, how much higher will it be at its apex?

  02.30: A box falls to the ground from a delivery truck traveling at 30 ms omu8 8edib,m 49habyr7r.a:/s. After hitting the road, it slides 45 meters to rest. How long does it take the box tidmr s .:9oa8 yhrb4ume,a8b7o come to rest?

  03.29: An object is thrown8 gtp8bca8(v0n pe8vn upwards with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacem8v 8n(negt8v0bp p8caent, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vertically u 3uo*twd7ow m.*ks4bpj4 5h lbpward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank from high to lwlkhbo4* po j3 m5.wt su*bd74ow the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight upward with identical v:rnj v/:l ix(ho p*+plinear 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 virh:/pj*opv+: (nlxmaximum attained height above the launch point in terms of H ?

  04.28: A rubber ball bounces on the ground as shown. After each bounce, the bal3(r 9bfha b9dkl 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 between the second and bd(rhbaf9k 39third bounce?

  16.21: At 1.94 s after launch, a pl)d1u gst/tvhwen boi9d. -. 1hw0t ;rrojectile in free fall achieved its minimum speed during flight. If t . id h-thorlws9 dttguv;/be1)n0.w1 hat minimum speed was 15.0 m/s, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The collisimo - ;. s r5qy-itd zkkhd.r+7bz9,rnfon 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.kr9;ndzqo 7br.srt-h kyfm+ ,zi5d-? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking garage. On4pt; c,0ym)vixbyr) xe 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. If the time for the ball to fall was 1.4 seconds, approx i,b)ytr;) x pvmx0cy4imately how tall is the parking garage?

  05.07: A snail is moving along a straighgkl 3a4y6 9amch8x l0gvb8h1u t 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, respectively, lhlubkhmx4g c38 1g9v6y80aaare

  04.38: A small point-b aua eq)zygrsm k ..gwuxa0;- 1* l7shre+f;5like object 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 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 lo;*0e; sa)5bszl7hku.yuf- magx+ e .awgqrr1 ss of energy and that it takes negligible time.

  06.13: A rock is drop nle59)hu;ndxped from the top of a tall tower. Half a second later another rock, twice as massive ald9xu ne5nh;)s the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. T(kgyw)joqkb6ewleop ; hg00r4b jc -;fg6 4a2he cart comes to rest after traveling 1 m. The experiment is repeated a;lq6- grgj;h6yg 0wewf 4kc0jo)b2 epo4b( k 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 initially moving at 0.5xdws*7 ;hsh, w 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 befoss,w* ;d 7hwhxre coming to rest?

  08.03: A dog starts from rest and runs in a straight line with a co(h- u wmtrvhk 93r040y (rsozgnstant acceleration of 2r0(w9yrh tk4 zs0mvr(o h-3ug $.5\;m/s^2$. 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 air resistance from a height h 02z 8tu7a fytjabove the ground. If the bal 8 tj7fatyz0u2l 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 uzky ,pj8g1uqvuxoco -i: 7j+0dju9u9 niformly 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 tox p ,uuy:v+z -o g7uijj9qu1k jod0c98 that traveled by Object 1?

  12.26: An object is thrown horizontally wit ej1- j)tixcc.h 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 o tc.j1)xij c-ene 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 k8ct xn8ev c/kl6.fg8n8bd6cuntil it returns to its initial launch point. Which one ofbc668nk cd /.v tfe xnc8gkl88 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. Throkqe+k+,*:ott2cz da*;buzc h ugh how many meters does the object fall during zqkt+2 zo,;: hkubedtcc **a+ the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat sf b8/5xhwdd(l0t4 qq lurface in a time of 12.0 s. What was the initial speed of the box when (h05blxq8wt dfql d4/ it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a spc qx ,u+b,l *8pgui/vbk4tmclf)l x++eed of 7.60 m/s in a time of 3.00 s. Through whxul8/i ++c+l b tv)q * gxp4b,clfumk,at distance does the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five seconds latereen8i2mw d ((ake88yq, 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 8i y8d((mqeenae w28kfollowing 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 60.0 cm/s. Five i8yx ng29e vis5 ngl ,be*83mtseconds 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,mt 8 5giy9lvi n*e2n3esg 8bx average acceleration of the car during the five second motion?

  14.33: An object moves with constant acceler 0ll4toxa9ngs6dn(-jh q -l 5.t*hjti*.x mwaation 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 initial.i((5xgz ; c riz)8apwjp9w ally is moving upward while in free fall. Which one of the fpa ;cwx.(9)zw(ri5i zp jga8lollowing choices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 second m*44sse:yqr4 2xjadd 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 velocity of 6.0 m/s for 12.0 seconds. What constant acceleration must the object have during the 8ymxss *:42edjdqa4 r4.0 seconds of stage II?

  15.32: An object moving along a line completes a 20.0 second trip wa 5g,(y imbq)tith 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 habam gt)y,i(q 5ve during the 8.0 seconds of stage 2?

  13.33: At the top of a high cliff, a small c8+kosp0wj6r hg+n3 j /;mx strock is dropped from rest. A ball is l 3r ph86+j+ xsmtcw;jgno0sk /aunched 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 dropped rock, what is the speed of the ball relative to the rock?

  16.36: On a straight rob6o8vkkv ./vaqi17xhuof * a3ad, a self-driving car races with a robot. The robot accekfvva6*8a 3k v/oo1ih b7qx. ulerates 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 of the b9e 1myqv2+z s;r+a dh-:yhknxall 0.70 s after release is the same as its vertical position 4.10 s after its release. At what tiekv2drxzqs; 9yh :n +my1-ha+ me is the object first at a vertical position that is one-half of the maximum height it obtains during its flight?