94.01: Starting from rest, object 1 falls freely for 9h,*rcarf+t x7 4t yvf4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, ob9fa4r7+cvh,t * rft yxject 2 falls:

  94.02: A car starts from rest an xwbex9k*+)po d uniformly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the carpbe)o*+ wx kx9 travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. Iz6/ qr *yy5vuy(7k wjkt lands 6.0 s later with a velocity of 40 m/s. What was the initial velocity of k(u/rkqj6vyz5* yy 7wthe ball?

  95.27: A rocket nearpwl90(wj*ip d the surface of the earth is accelerating vertically upward at p9p0 dwli wj(*$10\;m/s^2$. 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 atf ,nksy:n6)j d 27 m/s at one instant. If it continues to fall, one second later the object would be movinj:6fynd , ks)ng with a downward velocity closest to:

  95.39: A car starts from rest aniqpi ,/nhlf,/yr qx-l12qx7c d 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 buildi; 1 fgu7-zvgxqng strikes the ground with a speed of 30 mz1x;v7g-fg qu /s. Assume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time,6: pbj k77e1 gwpz-zy/w7qkkz an object in free fall has velocity 4.0 m/s in the upward direction. What is the approximate velocity of the /7zk bw kz:w6gqpek1-j7y pz7object one second later?

  98.14: How long must a y /61tytsyni) xz*sm-$2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling obja 6l:icpj z3d)n0 qh,yect is found to be moving downward at 18 m/s. If it continues to fall, two seconds later the object would be movqcn zi0 y)hjd ,al:p63ing with a speed of

  17.02: A small object is released from rest and falls freely1wo k6uqny :onm )y;8d for 4.00 s until reaching the ground. What was the height above the ground from which the object was released?ou1dy ;n)qymn:w 68ko

  11.06: A ball of mass =0.100 kg is laun;gv 4ysnetrhq5+n0e9 ched 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 4gher+n 9vs5 0 yq;ntethe 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 isk lju 163q rawudf:65v3es(j u 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(u aevj 3 skf3qu15lujr66wd: the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plane nd 56xsz*l p-s-9sid rhas speed 0.40 m/s two seconds after it begins to slide. Approximnss *l-9ids5xp- r6d zately how far does it travel in three seconds?

  98.40: Coin I is thrown upwajovlchj5du24cc9u 6jy4s5b ri.)jo 5rd from the top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2vjijj54y) udcco2r6b l 5o9js5c u.4h.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 twicesb0dp 2-s)1 ,ujq/ughnd38z(tazgwu the initial speed of another, szugduh,/2 sj n(g0p 3qdzu -81baw)thow much higher will it be at its apex?

  02.30: A box falls to the ground from a deliveryhc+sk2 3- i/bqa 6fqh7vt zw5y truck traveling at 30 m/s. After hitting the road, it s26i 7 ya5/ qzh3sktw vfb+-cqhlides 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/s near the surmxc,64 sg2 xphface of the earth. After two seconds what would be th42x 6cmh gx,pse direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3 uyx zam.gv12,m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank from .xuya ,vz12 gmhigh to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight upward with iqa b8o 8 l7z-i4yma8w*f*o lhe3kuqd4dentical linear momentum. Object 1 has mass M and reaches a maximum height H above tldkl ewa34q 8b4oz yqif-u*7a8om*8hhe 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 grou/c- eo3 dko9fond 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 second bounce was 1 second, what would be the time between the second and thirdo oo ck-9d/f3e bounce?

  16.21: At 1.94 s after launch, a projecba un87f37gg vtile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’78n ubf3ag7g vs initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The collision of the pv)5uju1 ,c-k kq3,k .fz yw msxrgg7l8ebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the .5mg jvku yz8uklrq xc37s1f,)-gk,w pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking g+pgdtyr;6 nh3arage. One student suggested that to determine the heigtn ry+6 d;3hpght 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, approximately how tall is the parking garage?

  05.07: A snail is moving along a straight line. Its initial poas*k.o8d ix3ynrhm ni6t 28 8psition is x0 = -5 meters ak8a on2xsr8mit d. h3 inp86y*nd it is moving away from the origin and slowing down. In this coordinate system, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled downwards by gravity (doux4kxh r8+; gv x,wyq9w3ygcaf 6g0 )awn the plane of the page) but is constrained to exactly follow each of the fric8wxagy+ k6cgyu;r04 ga), f3vxx 9wq htionless 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 later anoth bj dvnds(hj,g qag5j;0:0i4wu ;-oj fer rock, twice as massi -h5 o0(0bf,sjvd gnjgq awiujjd :;;4ve as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 nny0gn7bq g0,xj c0ps73lil2 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 yp3g xb gi7ns0cl qn2,jnl700 does the cart travel before coming to rest?

  07.11: A cart is initially moving at 0.5 m/s along a track. The cahin bkpse.6: ito. w7l2s be)/zgvbgts2( e+ 4rt 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: o7s(bl4pt nhztgib.i )6wvsg+b/e.2k 2se e cart travel before coming to rest?

  08.03: A dog starts from rest and runs in a strait -89q c8 h9p9pzzt2hrylljzvf u+ kmv54aa:5 ght line with a constant acceleratiohc:4va 9y+-h zl tzl u58a9p 2fk5tq89przj mvn 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 7).d/qrb.mj8yq iqr cfrom a height h above the ground. If the ball falls the first distance 0.5h imirqc)dy. jq .7r8qb /n a time t, how much time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both y x*-i)) geiw; lkg9s-dbp;tlmove and uniformly accelerate to the right. At time t=0,the objects are at the same initial positio;dpyikg)) xb *eg9--lw slti;n. 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 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 tv /pm9s w11mvrhrown 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 obje mw9vsr1mpv1 /ct’s flight to the ground? Ignore air resistance.

  13.10: An object is hlb3g /rj6k, kthrown straight upward. The object remains in free fall until it returns to its initial launch p /6k jkhgbr,3loint. 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 j 3kq.e tpzvu;/tm64) rxvz2zi.;kp fmany meters does the object fall during the firs.p2/ ;4kz kqt)upvr; mj6 it3z e.xfzvt 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to reicad90l mj (u.+;qlrn st across a flat surface in a time of 12.0 s. What was the initial speed of the box when it stai 0 n(qu+9dac;rl .jlmrted its slide?

  14.07: Starting from rest, a cart uniformly acceleratef5z:6jgbmdk 0s to a speed of 7.60 m/s in a time of 3.00 s. Through what distance k0f:5 mgjbd6z does the cart move in this time?

  14.16: A toy car initially moves toai.c9+xs b.2 uiil5bc 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 xicbc2u5ia9+l.. bi sof 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-m p *(2d-0g5jpe(dpnrngjmm 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 i( m-2nmgd05( jjep*mg r-nppds 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 acceljs0 m0qrfa: 0+9ymz4+/veuvibuc /fh eration starting 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 free fall. W1. eu78mjrmda hich one of the following choices best represents the direction of the object’s acceleration during 17.mdauj e m8rits flight?

  13.26: An object moving only to the right completes a 20.0 secoy- wxtk-hb6cjc cd348nd trip in two stages, I and II. The average speed of the entire trip is 10.0 m/s. For stage 3wxh-dyc- t 46 ckbj8cI, 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 seconds of stage II?

  15.32: An object movinh xyu.d0:m 8dcg14r zgg along a line completes 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 seco g.xmg:40 8h1z yuddcrnds of stage 2?

  13.33: At the top of a high cliez;c5b mea4u )d ;u5 i4)n)p5kpobq bzff, 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 wad5cm qbu;z;ippb) )bnk4eeua4 z5 o)5 s 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 acs,oh udo g1wr,+p+/bsceleratebh/sg d+r w+,opu1o s,s 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 position o:s6*6 zeru)uamol.8/h/w jqvz 6xae df the ball 0.70 s after release is the same as its vertical position 4.10 s after s ae/w)e.6ulaz/x ovd ju6:m h8z6q*r 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?