94.01: Starting from rest, object 1 falls freely for t(um.rk5 whq -4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, object 2 fall(wur-q.th5 mk s:

  94.02: A car starts from rest annn y:r(7,/scj 0ov)xth -f3n7e tfvxnd uniformly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far does they7 tx:vnr)no , fctnenj3fs-x /0(vh7 car travel during this time?

  94.03: A ball is thrown off a high cliff with no ho q t(x2+x8y6bsdgyx-kh x ;.horizontal velocity. It lands 6.0 s later with a veloc2 g6xhy8bs+;dx.q -x(oy kxhtity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of th m zjyon+0qo8 z,8k k1uk2n8xue earth is accelerating vertically upward at n,8ukk8q 2 1koom0y+u znxz8j $10\;m/s^2$. 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 av9+ .d fhcz6rst one instant. If it continues to fall, one second l 6 f+.d9rhszvcater the object would be moving with a downward velocity closest to:

  95.39: A car starts fro4 -53mrtt0nxz5) oyrjpba nf0 m rest 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 buildini bmt16lt ;mf/g strikes the ground with a speed of 30 m/s. Assume air resis1lt/tm6 m bi;ftance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/sow *e+oj9k ih7 in the upward oj k79eohi*+wdirection. What is the approximate velocity of the object one second later?

  98.14: How long must a+tcqa4-m2tcd am8wo7 $2.5\;m/s^2$ 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 a c0e(zi6uow p5t 18 m/s. If it continues to fall, two seconds later the owuc (oep6i0 5zbject would be moving with a speed of

  17.02: A small object is released from rest and falls freely for 4.3ido rkk;51zw + c+io(lqxfshc*1 l n800 s until reaching the ground. What wa*ir;zqn8xlk 1+c1(w ohd 5kl+cfoi3s s 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 that itexl ge 0fn,,5vhj)g73zu)e7u4nb ybd rises to a maximum height of 12.0 m above the l )y,3edl,hgb )zeunxve 4b7ug 0nj57faunch 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 launched straight upward ,r:nfxo/iq6rso 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 from its launch?o x/6q :fri,rn

  98.31: An object sliding down an inclined plane hzqs+ xz w-sp bwp)z7)0as speed 0.40 m/s two seconds after it begins to slide. Apprx)wz bpwz7q -)s0p+zsoximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the t+ /9rf+ radqcq;tjk)ffed *x)op of a 100-m tower with a speed of 15 m/s. Coin II is dro/j9qdt*fa f+rkq+cfd x e;)r )pped (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 offd8: ua/j2+ 2kzsu,fg akqju; another, how much hia,zju ;fd /:aj+ukgq 2u 8sf2kgher will it be at its apex?

  02.30: A box falls to the groubhu0.kr (edl1nd from a delivery truck traveling at 30 m/s. After hiteh(u1bkrd 0. lting the road, it slides 45 meters to rest. How long does it take the box to come to rest?

  03.29: An object is t)7t9 p ppzls.5+uy3 xp*wihts hrown upwards with a velocity of 30 m/s near the surface of the earth. After two secondityt*+l3ps z wph ) p9u.p57xss what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (-is7 1jzn64hp 1lea dn1m, 2m& 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank from high to low ti -4 7aelp1jzns16 nhdhe maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight upward with identical lineaw( b f (4a5fgtjkg91ahr 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 ((g5bj1wfa tgf9 a 4khpoint in terms of H ?

  04.28: A rubber ball bounces on the groure,gk2 pv /hjd(n(r,q nd as shown. After each bounce, the ball reaches one-half the height of the bounce bek,, n2/hed(pg vq(r jrfore 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 fatvbk(s g/f(5wdj4v*gwi; -y 3siiz-all achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initialsy j v gsv((; ig*wi/-z3awfik 4d5t-b angle of launch from the horizontal?

  05.02: A pebble is dropped from a high ve92 dy:6rwobb,iwe ju /rtical cliff. The collision 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? I:ewor/y6 j9 ,bwui2 bdgnore air resistance.

  06.03: Three students were arguing about the height of a parking garag vhyau)9h.z( fe. 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 tenni .u(yhav9fh)z s 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 bcv .ye9kx(t2a straight 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 velocityv9 2bketxc.(y and acceleration, respectively, are

  04.38: A small point-like object is pulled downwards mi0yb , q+xec7by gravity (down the plane of the page) but is consbe 0qm,i x7+cytrained 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 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 lateh*e8d-.txg dq r another rock, twice ag qe*hx8dd.t -s 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 comes topw 3tsgja (*r-xsxw. 2s+x/ix res2twa x wi+/ss-pg x*.s(jr x3xt 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?

  07.11: A cart is initially movi)( / 1 qjnc+ntolj2smpng 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 cm2 o/p jc(njlt+1qsn)oming to rest?

  08.03: A dog starts from rest and runs in a straight l1jh cgw*s6brodx lzne3y1:3 ;vc 0h9p ine with a constant accelew 3h;zvx:j69h1og0 lccpeby*r1 s nd3ration 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 initiallycn0lp3nk: j+y .utou8 at rest falls without air resistance from a height h above the ground. If the buo.+un3tykcpnj8l 0 :all 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 accelerate s53g-h5v9q-fw vhwz cto the right. At time t=0,the objects are at the same initial position. Object 1 has initial speed twice that of Object 2; Objeczhhvq3 sw- 9gfw-v5 c5t 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 with speed 10.0 m/s from a height Hc y3tzhlqlru 3)l828r above the ground. The object reaches the ground with a speed o 8tzhcr 8 2ll3yurql)3f 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 ap)vj v*c..hk free fall until 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 flight? *av)k.p.vj hc

  14.03: An object is dropped into free fall. 0d j5rjtv,wa9Through how many meters does the object fatw jrdvj509a ,ll during the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface in a time of )u5 f: * 1dcljvdt1w8vmm )qgb12.0 s. What was the initial speed of the box wq*df1bm:uv8) 51t ) cwvmldg jhen it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speedz xxxg297t*e4t zu )a0w3vmj h of 7.60 m/s in a time of 3.00 s. Throu 0xam*4x9v h j)z7zetgt2w3xugh what distance does the cart move in this time?

  14.16: A toy car initially moves to the right atcqj94 ;mcl2jm 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 velocity of the cqcm2jml;9c j4 ar during the five second motion?

  14.17: A toy car inikk uu4abj1 ,9n+mer8z nr kne 26hr1d,tially 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 where it started. Which one of the following choices best represents the magnitude of the avern ra j kz kn,6munredrh2,1k1bu9+8e4age acceleration of the car during the five second motion?

  14.33: An object moves with constant acceleration subhub w7gmc0 5 65odyw .+s8xljczc 52tarting 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 mov*ni4h9v+tm,m1ifah hw, h 8(z2xl udjing upward while in free fall. Which one of the following choices best represents the direction of the object’s acceleration during its fli18hjmw9 vi t*ah hl2z4,ifnxd,+(hmught?

  13.26: An object moving onlg u:8w) eg3qb)cpnl* bt j13cgy 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 velocity of 6.0 m/s for 12.0 seconds. What c8g31blg np)*gw :c3tejc u)qbonstant 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 second trip with an x/,g gt (m7b)4tuzwn p)zb:9n67tctl zepqn0average 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 have during the 8.0 seconds of szgqunwnpt)p76 gc9lx4t)(b 0mz : t/ ztben,7tage 2?

  13.33: At the top of a high cliff, a small rock is dropped from rest. Aye(v+g1-t js-1dta7td cm x,h 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 dropped ro(1-ced +tta xstmdh,1y-j7vg ck, 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. 3 bf1*hhz ;, dvmttke-arn*b8The robot accelera ;3-,b vzm ehrbdt 8fkah*t*1ntes 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 gc*bc,jlly23 i bi7 x(oyi7 x0vertically 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 timelbxco 7i2yij0l37yi(g bx*,c is the object first at a vertical position that is one-half of the maximum height it obtains during its flight?