94.01: Starting from rest, objept-w ridd,7 2oct 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, object 2 faldd-w,t 27ori pls:

  94.02: A car starts from rest anxxct 1 (qpp5f0u bhk82d uniformly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How x1ukf0 8xhppb2tqc( 5far does the car travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. It lands yd/proil99+k 6.0 s later with a velocity of 40 m/s. What was tdi9op kyrl 9+/he initial velocity of the ball?

  95.27: A rocket near thx2- 8 a8hztcp)sr8j- atafy,de surface of the earth is accelerating vertically upward at-)c8aps hyfzrdajxt 882 ,-at $10\;m/s^2$. 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 e)w.8o(ba k 3gf uh25ob. cw+pqjxcyca6u/ h.downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be moving with a downward velocity closest wa6u(b)owch .+yo8.f5 a xk bc .3h/gq2cju peto:

  95.39: A car starts froit8kf h 3/cwhar :0+dlm 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 building sit7y+/ngz dsbt4kq /fop 001 qtrikes the ground with a speed of 30 m/s. gop/f 0 d q/0sit7qk4zyn+t1bAssume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free60)scsu9f-lan0c og3eq g oc; fall has velocity 4.0 m/s in the upward direction. What is the approximate velo30a-s0f);c n6 ulc9eoosqg c gcity of the object one second later?

  98.14: How long must bt/p;th;ot9 drr11xoa $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling object iskq. 20cv*vf4 gn dqd.*u 6msuc found to be moving downward at 18 m/s. If it continues to fall, two seconds lf0k4dvcqcqn.ud6 2*ms .*ugv ater the object would be moving with a speed of

  17.02: A small object is released from restwgs7:t2 mj6 ceihpkymp2a+ /3 and falls freely for 4.00 s until reaching the ground. What was the height above the groun2mgheytck6 wp3js p2 m:+a/i7d from which the object was released?

  11.06: A ball of mass =0.100 kg is launcheqkqi(i. gummn ;:, 7ucw.1anbd 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 c i;an nk,.q: qb7mw.gi1u u(mmaximum 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 unolz6po 7 (/zjpward 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 the maximum height p joon(z6z/7 lfrom its launch?

  98.31: An object sliding2zh -ii)q t;nrg8eh:a down an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does it travel in three rq a i;:g2nhi8-z) theseconds?

  98.40: Coin I is thrown upward from tty.h,tejwk :k ;ygka(xgl ) (,he top of a 100-m tower with a speed of 15 m/s. C;gak(kt l.xh teyw)(y jk:,g,oin 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 upwarb, 0k*enjejhf k 0d75brt18esds with twice the initial speed of another7*kf r0,e5tk8henjd b10b js e, how much higher will it be at its apex?

  02.30: A box falls to the gxflv7od+ h-2u round from a delivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box to come to red+h72-ux of vlst?

  03.29: An object is thrown upwards with a velocity of 30 m/s near thefhdn*hwwvrw:1+0 2y w surface of the earth. Aftr+nhw2f0wv d*hwy1:w er two seconds 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 u70ky mrff3g s3gw54trpward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank fror m3f4 3ksggrfw5y t70m high to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight upward with iden1uql- f6rcfwmijis+b,4kr . (k7ghq +/2oeaa tical linear momentum. Object 1 has mass M and reaches a maximum height ki+qe/ 4lf+ ba6os uik(f2 mhqrg,7a.r- 1wjc 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. As 4 zks1+uyo zid0xf i 4me mgheu+ges1:460r*fter each bounce, the ball reaches one-half the height of the bounce before it. If the time the ball was in the 1z+o4mgur egmekss1d4z0if: 6xye i4 su+ 0*hair 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 launch4smvtt /xm5ajxz .;-i, a projectile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/jt4/ts .mi5-vx z ma;xs, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a hig 1bbj r9l17)o3eeyy +9ig rchlh vertical cliff. The collision of the pebble witheilyo lbbh1+g93cy79 ) rje r1 the ground below is seen 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 height of a pan(rvkfl69n+vkx jj6jk 9 ,b- fzz6ona ;v9 .narking 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. lv.zv +kzx 6jn6njk-rkn9vano a(9;f b,69fj4 seconds, approximately how tall is the parking garage?

  05.07: A snail is moving along a straight line. Its inr(,etg cn :ds6itial position is x0 = -5 meters andg(n ,cset6: rd 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-li it92xfg1zn8y lj48)v ;j6 ( ubfzclydke object is 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 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 poind 2vtcu z;njz(48)igjx6b8f1 yyl9fl t 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 t)u8fxt* rcj v(he top of a tall tower. Half a second later anotherrfvc *8t u(x)j rock, twice as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving a x3juzl5dv)9 jt 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. z dl95j3u)vjxHow far does the cart travel before coming to rest?

  07.11: A cart is initizwwt/ i 0bjm7u4gy2c5ally moving at 0.5 m/s along a track. The cart comes to rest aft27/gc0b5j4ywwm z uiter 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?

  08.03: A dog starts from rest and runs in a straight line with a consy e7hs o+s 3*p3mopjz*gg/0hktant acceleras*h3/+shk3 pogg0om* pejz7y 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 resistance from a h gmv ejl+t7rc( p0p,gj45huk,eight h above the ground. Ihg ,t+gcjemj(kp rupv4l07 ,5f 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 both move and uniformly accelerate to the right. At j /t cl+01p*ni;ulwxjtime 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 acceleration ofcj+/w0xt1in jul ;*lp 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 horizontalldujd-,m; fmi6 y with speed 10.0 m/s from a height H above the ground. The object ; 6m-fjdmdui, 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 resistance.

  13.10: An object is thrown straight upward. The object remai s. oyqzy4 o:/llz1k8jns in free fall until it returns to its initial launch point. Which one of the following graphs could represent the velo o/:z4ly1kz.8slqj oycity of the object as a function of time during its flight?

  14.03: An object is dropped into free fall. b7g u/vw49 1e ,qxrzdf h6-3 n8bbx ldp(qwbz5Through how many meters does the object fall during the firs8-3lw,brqup dh6/be41b f(bn v dxw5g9x q7zzt 3.00 seconds of flight?

  15.02: A box uniformly slides 7.5vid +*c;zvj)v0 m to rest across a flat surface in a time of 12.0 s. What was the ivv;i) *cj+v zdnitial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 7.60 m/tj 4qw.o dh8i1t+ m0wns in a time of 3.00 s. Through what distance does the cart movdq1w.h+owtj n40t8m ie in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. F4jz u d;rmq)xe3opkzpv. 3vr 1iz9j35ive seconds later, the car isq3.z)xmev p5vdp1o; zrk ri3 z439jj u 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 during the five second motion?

  14.17: A toy car initially moves to the ri (qx rj6o e8d:eshu.j9ght at 60.0 cm/s. Five seconds later, the car is moving at 40.0 cm/rej :(eouhx6s9j 8 .qds 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 acceleration of the car during the five second motion?

  14.33: An object moves with constant acceleration54.fsse6r k w7awhlmv8m 3/jt 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 xj6-vq55llc qfree fall. Which one of the followingc5qv6 l 5-qljx choices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right com 962lftpr:gkf 7viq3y pletes a 20.0 second trip in two stages, I anpkq 7 9:tgyf3iflr26v d 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 seconds of stage II?

  15.32: An object moving along a line completes a 20.0 second trip xm (q6+s0(xvix ckv8j 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 direvsx (+qcx(86j0x ikv mcted to the left 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 ball is 1zh i(7s: i76admtr qvlaunched 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 inadmth7zv7(:6iqir 1 sitially dropped rock, what is the speed of the ball relative to the rock?

  16.36: On a straight road,ay;z b tab:nx4u;*m 9c a self-driving car races with a robot. The robot acceln:xc a4 a;9mybtbz* u;erates 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 positioae/+ (biubpo+/u1bvd 9 . pcfpa2;ejq n 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 maximuu2p+ ;pcdaf aq io+ e/pbj/u9.b 1(vebm height it obtains during its flight?