94.01: Starting from rest, d+xyo5/yb qxs:z q1-eobject 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared t:- 5/ydbs ye+q z1xxqoo object 1, object 2 falls:

  94.02: A car starts from resd9 m jv scv9.u/sm4syw)e+6gp rw;sj-t and uniformly accelerates to a final speed of 20.0 m/s in a time of y/6 e94.psdgvc suw jwm 9-m)vsj;rs+15.0 s. How far does the car travel during this time?

  94.03: A ball is thrown off a high:qsxqgj ofn6ev8b d:k; a *f;0 cliff with no horizontal velocity. It lands 6.0 sa qfgb* q80fj6 vknx:;od e;s: later with a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of ttebnk 3ss 9p64he earth is accelerating vertically upward atbe93n 4kts 6ps $10\;m/s^2$. 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 7diyei/pzy g 0t:gd:)m/s at one instant. If it continues to fall, one second later the object would be moving with a downwt7: pzg) /iegyid 0dy:ard velocity closest to:

  95.39: A car starts from rest and accelerates at;uo 5zz h 1ppo7w9p/puocb5p: $0.80\;m/s^2$ 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 strikes the grou6c4( erjr;hcgnd with a speed of 30 m/s. Assume air re h(rgj;6 4ccresistance 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/np(dfy /1ib221s qotws in the upward direction. What is the approximate velocity of the tondpi 2f2s/11wb(q y object one second later?

  98.14: How long must ay7yyml.9pc jv )r 8z,h $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling object is a/b+xpr bh5 8ifound to be moving downward at 18 m/s. If it continues to fall, two seconds later b /xih5+bpr8athe object would be moving with a speed of

  17.02: A small object is released from rest and falls freelol-p7o myh 3 lrom:9u:y for 4.00 s until reaching the ground. What was the height above t::oh3 l9lyou om -p7rmhe ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so tmo)o fmu-w2ksmpu)b s uou b en03:qx s8)0s84hat 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 the net force acting on the fm) umo-ws e0b)0snuuxbs u2m:qo 8po)4k3s8 ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 kg is launched straight upwardjx : ooba7) gw6 wk,.geuij7/p so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. App)gi7k: 6paguo ,w w.jbo7x/jeroximately how much time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined planejt21q ;tdrh 5leo7 4cw has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does it travel in three sde r hojq2c147t;t5w leconds?

  98.40: Coin I is thrown upward from the top of a 100-m tyqea9o-) d g.o b*4tfhower with a speed of 15 m/s. Coin II is dropped (zero initial speed) f-d9ogtya.e4)ob * hfq rom 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 directt0g.xa9b(hcx,vnb n ; ly upwards with twice the initial speed of anothe(xnbv;angt.c,09 xbhr, how much higher will it be at its apex?

  02.30: A box falls to the ground from a delivery truck traveling at 30 m/x+gfw,zr7a dus ;au95 s. After hitting the road, it u xw9asr+ u dafg;7,5zslides 45 meters to rest. How long does it take the box to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/sbzgkd y:1t/)g near the surface of the earth. After twogk/ dt1 :)bzgy seconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m&46 qv8rk8fntdzfi5r4 j+n0qf 3m) are thrown vertically upward with diff fqi56f4+n8j0r kr4q 8nvdtzferent velocities (1v, 2v& 3v respectively). The diagram indicates 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 are launched straight upward wif ;*8x(gej(mm4 nci -cdlftt2th identical linear 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 maximum8x;(i-djgmtltncf *e(c m24f attained height above the launch point in terms of H ?

  04.28: A rubber ball bounces on the groq(zpxth -h w-) v:irb3und as shown. After each bounce, the ball reaches one-half the height of the bounce before it. If the time the bal3xt (bqphi- :r)-zhvwl 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 fro bg5jq k0hj,).9zbs z(ot*h eee fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what wakjs5ojqh0gz * ,(ot)9h.beb zs the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a h81 qe0n5 6asui vzehb*8q2yytigh vertical cliff. The collision of the pebble with the ground below is z1 u8n 5q0a2t6 qsivy8*heeybseen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the hb6a(1pgo1 can eight of a parking garage. One student suggested that to determine the height of the garage, they simply 1bna1go ac6(p 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, approximately how tall is the parking garage?

  05.07: A snail is moving along a straight line. Its initial positi qz1 e 2tpuz.4l3w;)xypar5rm ovq1f0on 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, in zymo2 )p1rftq.e 314;xrpu q0lazw5vitial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled downwards by gravity (down toj 4ov2p,hfh nd5c+s5tj t 1b3he plane of the page) but+t15p4h jf sb5c j3od,noht 2v 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 loss of energy and that it takes negligible time.

  06.13: A rock is dropped from the top of a tall tower. Haxsv..)g87b7 uchwvjolf a second later another rock, twice as massive as the first, is droppe w)hv8covxs7 jbug7..d. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. Th w87c wwyjj))ae cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is initiallwyj7j)ww 8)acy moving at 1 m/s. How far does the cart travel before coming to rest?

  07.11: A cart is initially moving a0 skgwtp q-q1: pl3 oc84j gwmmz845grt 0.5 m/s along a track. The cart comes to rest after traveling 1 m. The experi4r158m wp4mk 8-w:3c gzqgtsg joqp 0lment 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 constanatcd8tli+ sh7-b 0(j bwmki +4t accelerahi -+ tl7 4(ckabwj8tidmb0s+tion 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 resitqb10s49vjuy za dv 4nu8hb 13stance from a height h above the ground. If the ban 8 s9 ut3qaj yz44bv10dvb1uhll 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 to the right. At time t=6t (do+qr .j-z/t -q1afyx adi wb31ib0,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 twi o-6yx . +-t dzfqbrqia1b3j(d/w1 tao 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 ,7hu 4fmlczc jj 3uhr v4uwbr9l9i4 +.thrown 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 choices best represents the time of the object’s flight to the ground? Ignore air resisuflih 4jc4,+. 94 lwcjuhvz3rbu7m9rtance.

  13.10: An object is thrown straight upward. The object remains in frefe+) ,h tp/rzqe 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 fqe,r+pz / htf)light?

  14.03: An object is dropped into free fall. Through how many mea2q ak)1t p:wrters does the object fall during the first 3.00 seconds of flipr1 a:2qk w)taght?

  15.02: A box uniformly sli89.zjmq kf wu8des 7.50 m to rest across a flat surface in a time of 1uw8qkm9zjf .82.0 s. What was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to ax5+)sf 0a b o(lh xqe:)donx:r speed of 7.60 m/s in a time 5+xnox dqhl)) f::orabe0s( xof 3.00 s. Through what 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 later,/o m9 gu2 78xsjzsiu ai2m2ah5 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 uaashg oj8zmsixu2 5 79m22/i 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/s. Five secal:p.y yhke ,6dm:q0ionds 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 starteidp0y,mqh:lke: y. a 6d. 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 startingf nk5mfri73nek. ra.+ 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 upward while in fw 5 3tx81rg hbh4l4hnp 1taiisd(1e t)ree fall. Which one of the following choices best represents the direction of the object’s acceleration durin51w18n xht)ea3dhs1r p4i ibg thtl4(g its flight?

  13.26: An object moving only to the right completes a 20.0 second trcx z -/gmidi:-ip 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 ha/z c-d: ixi-mgve during the 8.0 seconds of stage II?

  15.32: An object moving along a line completes a 20.0 second trip with an 3/bcw a5ts 7ifaverage speed of 10.0 m/s in two stages. During stage 1, the object moves with a constant vsctw/753 abifelocity 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 clif3ks310ltvlyxumko w8iq /899cy.hma f, 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 dropped rock, what is the speo 9sk3 y1tqmuvm0y8i c. 9l/h3lk8xwaed of the ball relative to the rock?

  16.36: On a straight road, a self-driving car races with a robot. Thex0w btb0-s ;4ez 1hpdi robot acce4 0ws;pxz0bd-ei1h bt lerates 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 vertic(+ystd3vsn2 y,o h 7f.7oosaually upward. The vertical position of the ball 0. uo+sy.oo 772yvdtf s,hsa(n370 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 maximum height it obtains during its flight?