94.01: Starting from rest, object 1 falls freely for 4bw(ja7 old67 9 pha-sf.0 seconds, and object 2 falls freely for 8.0 seconds. Cwaljph-da 79 sf (67boompared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates 9w 7w.cl4a 3wkc vl,hkto a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travel during this t 4wvwak 7k.l,3ccw lh9ime?

  94.03: A ball is thrown off a high cliff with n09eb:* yxh tr1lgdk*no horizontal velocity. It lands 6.0 sky9eh *0gt: 1ldbx*rn later 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 acceleratidm :h pb10l2 hw,asnvf:a0fy-ng vertically upward a1y : dalf,h0ns2h vm:pa-b0wft $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling bodyfo6i ;6cyfq6l is found to be moving downwards at 27 m/s at one instant. If it continues toof;y 6l 66cifq fall, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and accelerates a(smb o1s;:ot f j),liot $0.80\;m/s^2$ 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 oz*r-k2f nr )ysf a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of th2 ky)rr*zfns- e building is approximately:

  97.09: At a certain time,pb5ua 3si nk06 efil9 )lpbf;6 an object in free fall has velocity 4.0 m/s in the upward isn3uf69 ab0fp bpek ll; i65)direction. What is the approximate velocity of the object one second later?

  98.14: How long must a 8vjrlr*ss tq+o c(-i9 $2.5\;m/s^2$ 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 downwarnahlj+h n0kuk g)0g 5+d at 18 m/s. If it continues to fall, two seconds lkun+jng 0 h5)k0g l+ahater the object would be moving with a speed of

  17.02: A small object is released from rest and(mc9p . tvj7up qr2gh3z:dbq9 falls freely for 4.00 s until reaching the grq2( 9g t7vmp9r:qc3pjuhz .bdound. What was the height above the ground from which the object was released?

  11.06: A ball of masydb; pw4(tq(jjdb*tpi3 :t -fs =0.100 kg is launched straight upward so that 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 mag*pw 3ttt(;-j(: bpbd4qydij fnitude of the net force acting on the ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0./j) hu:gd fc6o100 kg is launched straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ign )jgfho6:ud/ core air resistance. Approximately how much time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an incli t,(iml qd8:vsned plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far i(:q,8 svmltddoes it travel in three seconds?

  98.40: Coin I is thro,1iub4ptpm trm9.litbv 5 b :0wn upward from the top of a 100-m tower with a speed of 15 m/s. Coin II is bimvt0upr :9 ptlb51m bit.,4 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 thrkwq x/mq :fpx3pss: e0e)8p:f 82mjxlown directly upwards with twice the initial speed of another, how muchpkfep qj:)x8qxlfp /8:m2e 0:msw3s x higher will it be at its apex?

  02.30: A box falls to the grohu67) ck v-sn cn6p2zyund from a delivery truck traveling at 30 m/s. Aftec) 7-zy6nc6ukh p n2vsr hitting the road, it slides 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 66:kg+t cnn co3tf.ak.ytu xep/+f8pp)twn; of 30 m/s near the surface of the en:kt)k3c8ot.c faw++66pe px fp g t;.un/yntarth. After two seconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2mbara8 0s6e+tth06h hq36os lj& 3m) are thrown vertically upward with different velocitq jt8shoth6lh 630ab ra06+e sies (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 h -lfdsx5 ;rs2 x1hbh6straight upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If object 2 has mass 2d lhrf hbhs-6x 2x;s15M, 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. After each bounce, tu 4wmhm+*xh; rd1:ns x ccp9b1he 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 bouncc9 1mm1;wpbx*chux :d s+hnr 4e?

  16.21: At 1.94 s after laus .2si kks /h.9c-nfwp+a bb-snch, a projectile in free fall achieved its minimum speed duns-fis-h2p / a9bw+scbk.s .k ring flight. If that 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 verticrx1//hmif z) :vwr s)lal cliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. vf r:rmlz1h)w/xi)s /With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students webjo;e5; b1/rz ao)(bqlp qad/re 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 from the top and time the fall of the tennis balls. If the time for the ball to fall was 1.4 seconds, ara/pb1(b; qbodzq jolea ;/ )5pproximately how tall is the parking garage?

  05.07: A snail is moving along a straight line. Its jo ogcyl12h v t4)ip3/ah(2vhinitial 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, in)h3/ co(oh2jlyh2tai v vpg 41itial velocity and acceleration, respectively, are

  04.38: A small point-like object i/+cgj) w 61paxl2 zwgzs 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 t+)ww 1zj/xcp2 lzga6g o 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 latm5q*6xw1ysl u: nqx3ver another rock, twice as massive a65 l31nwyqqx mvxu*s:s the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The ca*(knmt- h/hhz k 8b0:t)cy mqbrt 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/ch0nmhbk ( *htqb)/-: kmt8zys. How far does the cart travel before coming to rest?

  07.11: A cart is initially movingdf+c/o ojrq87 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 noqorcjf7o/ d+8w 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 cons,lfro;- xf/x6r j7dn u *tgr+n 5(nzwktant acceleration +x k7zug*wnl, j6n 5rxdt-nfo;/fr r(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 resthaw)r j8 q/bn, falls without air resistance from a height h above the ground. If the ball falls the first distance 0.5h in a time t, how much time is required to f r8)a,hn wb/jqall the remaining distance of 0.5h?

  10.38: Two objects both move an))8fve **i iqlo/o d 8sgy::0dptw lehd 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 d) :eoe: whp i/fvoig)y8d8 *l sq0lt*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 2wko88b x1uu 4ppxxz4a height H above the ground. The object reaches the ground with a speed of 20.0 m/s. Which one of the followin8 xwxu ppbxu14z8k42og 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 r 5)zdofg(59 syylfd; cemains in free fall until ;c z fd5o5fy9dyl()sgit 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?

  14.03: An object is dropped into free fall. Through how manx,z); akg8 zepy meters does the object fall during t)k8ga,;xepz z he first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across 9*3lxcv z/4y4 ozz/eh-ync3ri vrmy(a flat surface in a time of 12.0 s. What (/ -3lr*rz yx 9yc4c /v3vmziz noeyh4was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to c*g)b e7y c16appv 7gya speed of 7.60 m/s in a time of 3.00 s. Through what distanc1begg)yc 6* pc7avpy7e does the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five seconds latip :p0. vc wh7zq-kau8er, 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 car durinp-wiv .7aq8:uc0hkzpg the five second motion?

  14.17: A toy car initially moves to the right at 60.0 cm/sd clzwdzd4b 2.b(h e5gnp7s26. 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 a. cz npb52d4e wlsdb7 h6gd(z2cceleration of the car during the five second motion?

  14.33: An object moves with constant acceleration starting with veloll7 1cm,wqn :xdv v7:mcity $v_0 = 5.00\;m/s$ 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 fall. Which one of th+wgpiypleqz10 gp j;w q42k+.e following choices best rpi k 0g.jw g el+21+y4wp;pzqqepresents the direction of the object’s acceleration during its flight?

  13.26: An object moving o.jx 9zqt2mwl7 xwu9a/nly 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 constant acceleration must the object have during the 8.0 secon wz9/.uwm2lx a x9tj7qds of stage II?

  15.32: An object moving along a line comple3t r8ym,xmc(9l7nw cy(et 0qdtes a 20.0 second 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 left must the object have during the 8.0 seconds93 tw07(yd8n ,lyqrmxc(c etm of stage 2?

  13.33: At the top of a high cliff, a small rock is dropped from rest. A ball 5x9u de7ek s.r,:eqy yis launched :y9ere k ,dueyq5sx7.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 road, a self-driving car races with a robot.r99 4zcf sff mrm7.dt( yefu-1 The robot accelerat rs9yd m79r effff(.mct1 z-u4es 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 poqf-j:djwe0cxyz 9. -p sition 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 maximum height it ec wjq-0. f9-z:y dpjxobtains during its flight?