94.01: Starting from rest, object 1 falls freely for 4.0 seconmxnxk 2 /q/sm9ds, and object 2 falls freely for 8.//xmxnq s9m2k0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerate x6z6l)dtqlgj9 t o5vuzq 375;pealz6s to a final speed of 20.0 m/s inatztgjlq3xzqe)l v6p6 65z9l d 7 o;u5 a time of 15.0 s. How far does the car travel during this time?

  94.03: A ball is thr2zgqccuk aoz95b24l;own off a high cliff with no horizontal velocity. It lands 6.0 s later with a velocity o czq2g5lz b42; uaoc9kf 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the tl lul:1c+ a:rsurface of the earth is accelerating vertically upward aa+lr:u1lt cl: t $10\;m/s^2$. 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 m/s at one inr +e 1nz 23;92nrmgqgff(f jqhstant. If it continues to fall, one secor+1qf23g m2f( n9g;q zenhjrf nd later the object would be moving with a downward velocity closest to:

  95.39: A car starts from res 8mug1ov0n/ yth 6azd6t 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 isy8 p a6q.,kt6jilj-ut dropped from the top of a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of the buildinja8 .,kptl j66yui-q tg is approximately:

  97.09: At a certain time, an object in free fhe*lm+5 g 7) nl;hu egoz;bs8jall has velocity 4.0 m/s in the upward direction. What is the approximate velocity of the object oglg;lbj 8ez*o7eu5 )+m;n hhs ne second later?

  98.14: How long must a7qlgrl h(hy13xbu3a0 $2.5\;m/s^2$ 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 downward at 18 m/s. If it ctp.p*qjei f-c 1 meh9:/ukxs)ontinues to fall, two seconds later the object would be moving wieq9x. s )tpjc/1ep- iuf:*kmhth a speed of

  17.02: A small object is released from rest and falls fr3 g2;)q:h,z)az+ek maz ma,vy s gisk7eely for 4.00 s until reaching the ground. Wh3h:vasea ,) ),mi7ak+ 2 zgszz;gk yqmat was the height above the ground from which the object was released?

  11.06: A ball of mas-twgal6 ,a m u93svh1bs =0.100 kg is launched straight upward so that it rises to a maximum height of 12.0 m above tvtw9 m,6 -3aba1usglhhe launch point. Ignore air resistance. When the ball reaches its maximum height, which one of 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 la+il9 epn d;9waunched 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 takeeaw+i pnd;l9 9 the ball to reach the maximum height from its launch?

  98.31: An object sliding downozj ab1o. blhy /t;di8*ta889z(b2zu lpy gp5 an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does u/d zi8*1tb h(88opotz 5 9 a.2l;plagbjyb zyit travel in three seconds?

  98.40: Coin I is thrown upward9(cwvce-eus4xx; o 30vd:qi t from the top of a 100-m tower with a speed of 15 m/s. Codve 409xx;ucc:vt s-w3eqi( oin II is dropped (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 twice the initial speed of anor;htw4 bz-p; m gm-qq.ther, how much higher will it be gqb z q4.h ;mp;rmwt--at its apex?

  02.30: A box falls to the ground from a delivery truck traveling at6s xdc ;a+14l5fufle:6 z nulg 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box to come to rs fl d4 n:+e 6;f6uugall5czx1est?

  03.29: An object is throf64ev6erzi048uy dh g wn upwards with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the di v0u46r6dzee g4ihf8ysplacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown v2r4 r ur1(2pkx paeq6bertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicau4rbp 1k aep2q2 r6rx(tes 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,sr s4 /4n . flm37bnoat kbxi..j4jjg are launched straight upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H abov.sjn 744k .xbjr.ja3 mni4,f tg/slobe 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 the grounh -7d;rth,b gld as shown. After each bounce, 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 seconld 7r,hgbh-t;d 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 fr)o nh*0v5 fos c2z.5ankf9vut:-u nr vee fall achieved its minimum speed during flight. If that minimum speed was 5v5zh 9o-20v n.va ufokft:snu*crn)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 verticsh(r s,k3g cnf xs5k2 *wyl3g3vh4t,cal cliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. 35gf c kthx (34vngsl2swyc*3k hr,,sWith what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were)ycd8r b-mv.z arguing about the height of a parking garage. One student suggested that to determine the height of the garage, they simply had to drop tennis balls f-v zyc8rbm)d .rom 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. Its initial posu6)kg : dkisuu0 *fyi)is 2q6uition 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 0 dyg*usiuqui:)i uks6k 2)6f and acceleration, respectively, are

  04.38: A small point-like object is pulled downwards by gravity (w;7xr 57+ z tkh/hu 62ii fsjg,qqzsm3down 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) 32;wjiq7 i7mhf/uk,+s sz5t6 qr xg hznecessary 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 towe.ij5vx 10 j8euz mg xb+*bu1inr. Half a second later another roc1z jnb+u x*jixe.ib5m 0 81vguk, twice 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 comev t)scq i3ho32/py/++w ngj qii9h,k gs to rest after traveling 1 m. The experiment is repeated on the same track, but now thowsgqi/+int ph+chk3 v /9g3, )jy2qi e 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 0.5 m/s along :xosjmlz1p,zvwch rym 9ov0k 91k78:a track. The cart comes to rest after traveling 1 m. The exp0m1ro:cm w:7y szkhjv,9xkpov81 9z leriment 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?

  08.03: A dog starts from rest and runs in a straight line with a consta-ezd eum5 s:j.9mljre(b z:* ofk. +lant acceleration amem. j(ed9zjoz5uk+*lb::f lr .se-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 air resistance from a height8vh ,aub :k1qm h above the ground. If the ball falls the first distance 0.5h in a time t, how much time is reqakh8 vb, m:uq1uired to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerate toe,- p/,gxbrj f the right. At time t=0,the objects are at the same initial position. Object 1 has initial speed twice that of Obje ,jgpxr,/-fe bct 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 traveled by Object 1?

  12.26: An object is thrown horizontally auy ys xus76wj*9)a7d 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 d 6asxsy9a7 ujw*uy7) 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 objecasyp1 zhbi8t96 (u3 e ,skt*kyt remains in free fall until it returns to its initial launch point. Which one of the following graphs could represent the velocity of the obk1u(3*986b,hy z tesspt akyiject as a function of time during its flight?

  14.03: An object is dropped into free fall. Through how manyj1czve9cu 6 3s3x tt.u meters does the object fall during the first 3.00 seconds of flx9jz t 33 tu1c6.csuevight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface in a timerj5/o)8rwm j qcnzsuo/44pb+ of 12.0 s. What was the initial speed of qnojwbrc/o48 m u s/ z)5r+jp4the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speedgmtx+ m0 mwf;i, hac75 of 7.60 m/s in a time of 3.00 s. Through what distance does the cart movegtm,5 hi0wcm+ m x7f;a in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five seconda 2 g/mdlo q.i:xh6x qz)-q)hrtw-i 4ls 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 averagr hig)x--.xqq2)o/ 6:tdawmhqli 4 lz e 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 seconds la6-vxg ;zn8 mvw2h7u bmter, 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 vm7u2n6g b -hvw; x8zmthe average acceleration of the car during the five second motion?

  14.33: An object moves with constant acceleration starting with velocity+x v uo-xm)or, joff54 $v_0 = 5.00\;m/s$ 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 *u 6. msxi y7opn-4gzofall. Which one of the following choices bestzo ymu- ns*6o pg4ix7. represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right couuf0hzjyet v 6.uv 93t9vwp//*i0 ht ompletes 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 velocity of 6.0 m/s for 12.0 seconds. What constant acceleration must the object have during the 8.0 sv.z tw*e0yu u/ 09pv/6 j tvh3io9ufhteconds of stage II?

  15.32: An object moving along a line completes a 20.0 secondl hd:6 rdgbquxzgd(5cwz r0twk 17): 3 trip with an average speed of 10.0 m/s in two stages. During stage 1r0xwkuzrb :gq6 513g ld d d)zw7ch(:t, 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 have during the 8.0 seconds of stage 2?

  13.33: At the top of a high cliff,/gx2scdia *1 d a small rock is dropped from rest. A ball is launched straight downward with an initiadxc d2ig/ 1s*al 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 road, a self-driving car races with a robot. The robot ac-p0r g*kwes *dcelerates a0e-pksdgrw * *t $8.50\;m/s^2$ 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 lau ,r+ j8(qfg v9-/h)9 vvvywzoim qau)znched vertically 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 vertical posw r9jz/qi) -) v8vagm o(z+vyfhv9,quition that is one-half of the maximum height it obtains during its flight?