94.01: Starting from rest, object 1 falls freely for 4.0 sect-utana 563chkjul53 hp yg-7*ot *q ionds, and object 2 falls freely for 8.0 seconds. Compared to object 1, objecuu yot 3 65igc*3n*at ha5-tlk-hpjq7t 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final spee 4 b w6upvtobcoer.ig*e.-m2ep :9b4zd of 20.0 m/s in a timr9-eb gmo cbp*:ui26t e4.4ob.wvep ze 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 horizontal velocity. I/ zt;1*0c 0pmglls b:, bjhtr:nzvx0 pvf,m1 jt lands 6.0 s later with a velocity of 40 m/s. What was the initial velocitybjp;jz0m:vtcxh*flt10: bg rl1m0z /n,sp ,v of the ball?

  95.27: A rocket near a,,56l:pfk0eb32 e sngj ,1 hcng euesl2src)the surface of the earth is accelerating vertically upward afe5a g,l,6enu3skbh :,2cc2nsj egls0 rp)e 1t $10\;m/s^2$. 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 dowde0 3rkwee1o ox, ;2i ptr6gl0+ mtd*lnwards at 27 m/s at one instant. If it continues to fall, one second l*1ltrx; d 2w 0tilo me+k pr3d6e,0egoater the object would be moving with a downward velocity closest to:

  95.39: A car starts from ,-njdf xduv( szcp9,6rest 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 a buil1,ymol ,k wwv*bn1oe4ding strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of the building is appb v14 e, 1ky*oo,nwmlwroximately:

  97.09: At a certain time, an object in free fall has velocity7o crj,mxg+et87kx 2 r 4.0 m/s in the upward directioe8x mr 772jtx+c,gkr on. What is the approximate velocity of the object one second later?

  98.14: How long must aj6 bjey4 zfo8u7ri4y s9jhq(: $2.5\;m/s^2$ 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 toc +b4*; f wbiu/ql0fkk be moving downward at 18 m/s. If it continues to fall, two seconds later the object wfk/lbq uk c;b0fi4*w+ould be moving with a speed of

  17.02: A small object is released from rest and falls freely for 4.00 s untilvd45o -9pc5zdsb 7 asv reaching the ground. What was the height above the ground from which the dv75cao5zdbp 9v 4s-sobject was released?

  11.06: A ball of mass =0.100 kg is launchr0yvo qd2h9biz 6qxt, (g +4 l6 +pjlq0iit,vqed straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air r(liqpgi6zv64v+xq0yo j2q0q h,d,+r9b i tl t esistance. 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 avto/q u -4j2ih j,us4kg 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 sh u jto u4avq4j2-,i/the maximum height from its launch?

  98.31: An object sliding down an inclined p,+bns jo dy+)6ti; ulb0d9qi/6aiwrnrw *8 pylane has speed 0.40 m/s two seconds after it begins to slide. Apprn 6 it9+byi8wsruw,p);yqn/+ ja0b6 i*dlrdo oximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower with nbjt316/i cvfa speed of 15 m/s. Coinnfi jv1b3t6/c 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 twic wv1 o azjq9(.zpq*1eae the initial speed of another, ho1.w1zajvzaqqepo(* 9w much higher will it be at its apex?

  02.30: A box falls to the ground from a delivery truck traveling at 30 o(asd p6nqd( 4m/s. After hitting the road, it(d n6(sqpd4a o slides 45 meters to rest. How long does it take the box to come to rest?

  03.29: An object is thrown e ((xm 6kpr3fxgt )n4eupwards with a velocity of 30 m/s near the surface of the earth. After two seconx xg((mn)6krf 4ee3ptds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vertically urn v7xpy zt5(e5cr6,ipward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank from hi7pz itye5(,r6x n5r cvgh to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight upward with identir /.ng;eyr6)uoto( m( mwu;w ucal linear momentum. Object 1 has mass M and reaw(roy/; u). mgur (o;e6umtnwches a maximum height H above 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 ground as shown. a9g (ipzbpl -su9 b,.rAfter 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 second bounce was 1 second, what would be the time between the second and third bi,ublgsr-p(9za p.9b ounce?

  16.21: At 1.94 s after launch, a pror.2dldof3q l*jectile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial 2.odl lf3d*rq angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The collision of th:*z8v3 lsooa/lh,.8yf )(ka ml pdruh e pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed dhhf*kr.azv amo/3 p u 8yl,dlo(l8)s :id the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking garage. Onmdlvm8 iz(se99w s:i2 e student suggested that to determine the height of the garage, they simply had tos8e9v: i im(smwz l29d 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, approximately how tall is the parking garage?

  05.07: A snail is moving along a straightb gw/dg7: ra3)kk e1qi0zezd4 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 accelerat zeibgwk)407eq3z/ kar gdd:1ion, respectively, are

  04.38: A small point-like object is pulled downwards by gravity (down the plane nw7az9vt*u jm.8p3 qb 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) 3 9nba t 7*mvup.8zwqjnecessary 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 dron7go+i1 nvyh pbh1/25lh)p ptpped from the top of a tall tower. Half a second later another rock, twice as massive as the first, is dropped. Ignoringg5n/hptl+ p11hh y ivn7 b2p)o air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a trac x5txi vgo --j 52oia/zj7vw:qk. The cart comes to rest after traveling 1 m. The experiment i2j7oxqzwv /5:t-o-5 gax ivijs 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 initially movinngr*k tu :w;(pg 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 nk(u g*p:;wrt 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 rest6htji9mtwpux- -0wb+)xakr ; and runs in a straight line with a constant accelerationwtu-)b6+xkrxt jp-wi;0m 9ah 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 a hjnnri *tb,c4:+cq.f t rest falls without air resistance from a height h abovhn+if jbt,.4r:cncq*e the ground. If the 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 botam;3 - hgw81 kll,k9r9ies gcrh 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 acceleration19rl ls,c 9gegakm8r w;-hik3 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 sp0f.geg/ejm 6a.i8*: m zfzi men5jb: xti t2r0eed 10.0 m/s from a height H above the ground. The object rea60: em0e tiibmgzj.xrfa/z * mfget5.2 n:8ijches 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 )m0lkclm sqh ba+ .dm)6a+zp9until it returns 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 flig)qkdhca6p9) ab 0lsmz+m.m l+ ht?

  14.03: An object is dropped into free fall. qpj4j2tu);p nnn 2ulm6qf67( 2p kosp Through how many meters does the object fall during the first 3.00 6q2(n tm no2qp lj4suk;27fu jppnp 6)seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface5+ hb dfpryvexc3 m3bcr2 j7*: in a time of 12.0 s. What was the initial speehbc xcm3*3r2bvyp fj d5+7: red of the box when it started its slide?

  14.07: Starting from r tgo ;:2 4q*oujtkja1uest, a cart uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does the cart move in this titg ;oqk*2j:4a tuuo j1me?

  14.16: A toy car initially moves to the right at 60.0 cmtqhb- )v1e iv2a8fv yp6 9wi*z/s. Five seconds later, the car is moving at 40.0 cm/s to the left. The h8a)6v-q9vb*1tp2 zvie ifwy 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 velocity of the car during the five second motion?

  14.17: A toy car initially moves to the right at 60.0 cm/iibfsdd2y jt 80jlw3n;xe 8+0mab 8.ys. Five seconds later, the car is moving at 40.0 cm/s to the left. The total 2jji8e; mn waybyxdt3+f 0i l8s b80d.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 the five second motion?

  14.33: An object moves with constant acceleration startl 7njqzb e)bieqw2 f* yl)vev-.z +xw,w,k. ;bing 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 upwaxi vrb;1a,o7+- mdg7qi a- c9goxn8oxrd while in free fall. Which one of the following choices best represents the direction of the object’s accelerat;-aga,im+x oqg br8don- x iv91co77xion during its flight?

  13.26: An object moving only to the right completes a 20h ;5nkiy fn59p.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.inypn; 5 f9h5k0 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 secon)s0e7ay/r;/ wx9akv 6bfkyq k d 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 leftxfy;r /vq 7 kbk9aw6a/sek y0) must the object have during the 8.0 seconds of stage 2?

  13.33: At the top of a high cliff, a small rock is dropped from rest. A eql rmg/2 0y7sl3krj0ball 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 falr3jmq0e7 yll2k 0 s/rglen 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 robwd6 4z ke;* c)5cpctveot acceled 4k;c 5c*ectz)ve 6wprates 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. hoi,2z3wb8o f y2yam8 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 position that is one-half of the maximu8 wafb,zo2 ymhoiy823m height it obtains during its flight?