94.01: Starting from rest, object 1 falls freely for 4q8-x s6ifpn +ebc61bs.0 seconds, and object 2 fallpx866q 1en+c- sb fisbs freely for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest anjrbmatwr.g h 2t1:9 v(d uniformly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car trave ( grrh 9:a.j2ttwmbv1l during this time?

  94.03: A ball is thrown off a high cliff with no horl* 4x u k-wqj abj.)1ri/wjvl0izontal velocity. It lands 6.0 s later with a vl-i wvqk /j b1w rl0*)j4aj.uxelocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is accelerati g3jh74eoqp fd g8ts:*ng vertically upward atd 7tg:*4 pj gf8h3eoqs $10\;m/s^2$. 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 bs1*t tzp:ayzace k30r0nv); ye moving downwards at 27 m/s at one instant. If it continues to fall, one se0y za e;n):krz1 *typ tav0sc3cond later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and 1s m hi,vo6) t).atb1n*co, gmmd6rtbaccelerates 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 stq3i1 hmr3p aq+rikes the ground with a speed of 301 mria3+3qhpq m/s. Assume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an obj.;njyd eh2n a)c5 5nvdect in free fall has velocity 4.0 m/s in the upward direction. What is the app5 c5yjn va;e.ndn)d 2hroximate velocity of the object one second later?

  98.14: How long must 19xd(e/xz:sk yig7y h a $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling object is t *( 6gda )u andmd7;a(qbsqs6found to be moving downward at 18 m/s. If it continues to fall, two seconds later the object would be moviqd)u gas7b(mad6 (6 *dstq; anng with a speed of

  17.02: A small object is released from res yj 2v.mlkr8 .5u.wrmvt and falls freely for 4.00 s until reaching the ground. What was the height above the ground from which the objec mwkjvul2.8.vryr 5 m.t was released?

  11.06: A ball of mass =0.100 kg is lajt 7b;oldw 0ag4zs580dmx r7r unched straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistan jt7z4xm0sr7 adg5 wbl80dor;ce. 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 u8h+n/wsy it/r-l8 b qa95+q -xohuxczlxr5 2upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Ap nqo qu85+ -i-hc/yl5as/rlh+t92uzxx w8b rxproximately how much time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plane has speed 0.40 m/o ,kua5mlt)n 6s two seconds after, lotu) 6akn5m it begins to slide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of y1k)vdb;ys)rv dh2r)d :.yl *pnlp/ea 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from .edr;1 *b)d2: dnr pyh lypsk)/yvvl)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 upward.w m*anj6v s1ds with twice the initial speed of another, how much higher will it be at itd.n *amw61s jvs apex?

  02.30: A box falls to the ground from a delivery truck tr)cf gy 71 j3hnm:lr0ieaveling at 30 m/s. After hitting the road, it slides 45 metg hnfci3y0:1j 7e)ml rers to rest. How long does it take the box to come to rest?

  03.29: An object is thrown upwar.356,zpvas 4 t*wfhy5wy welwds with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction wlvt*5e ,.h5f6wyy4 ws3awpz of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3mxdf8qq2+c/ wb) 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 the maximum heighqwqc2f 8/bx +dt of each stone. Assume air resistance is negligible.

  10.25: Two point objects are:yb -hn5dn6h c launched straight upward with identical linear momentum. Object 1 has mass M andn:65nb hc-dhy reaches a maximum height 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/ shke*-d +n9a,xhh vl 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,dh-levk, 9x*/hanh + s what would be the time between the second and third bounce?

  16.21: At 1.94 s after launch, a projectile iy4+x s 3 fgw67a kc2f9ueek;pwn free fall achieved its minimum speed during flight. If ;3+ge94xc6u kk2ays f7wefw pthat 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 ve 8qaqa xdvys+b-z +s)5rtical cliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebbls s8zqd5x-a qyv ++ab)e is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the +h kxc y7op 3nm1dp17kh+ynmh j-6l2 vheight 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 thedp1 vjy7123h+knxl 6m+hykpc7ho -mn 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 kjimd ,*d 8c.b n* lcp5lfr,q)along a 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 signscl.n,q d m*rj ,8cpdlbf)k*5i of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled downwards by gravity 8eb5*bof8dts o fi4 l-zd9 ai4b+axj5 (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 * b8djxt 5i o45a4blo+8sd-9ziebaffof 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 freoiks bj:x8;a6 *w w*67hdnkeh7( mae om the top of a tall tower. Half a second later another rock, twice as massive as the first, is dropped. I67ihjexsb*wk 6e o: a8k(7*weda;hnm gnoring air resistance,

  06.18: A cart is initially movingacnd95n3 jur6 at 0.5 m/s along a track. The cart comes to rest after traveling 1 m. The exp6da5 rc9n3unjeriment 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 moving at 0.5 m/s along a track. The cart comesybvtb)53 n-c nn9 n)wn 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 travet5n 3 ncbnyvn -n)9wb)l before coming to rest?

  08.03: A dog starts from rest and runs in ay-xj66b61uthh5kc n x straight line with a constant acceleration ok ujb6- h tc6nx15hy6xf 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 heigba8wxz yymv.5la ve l1)u0 90yht h above the ground. If the ball falls the first distance 0.5h in a time t, how much time is required to fall the rema8am ll .9 u0a y5vybwyvxe10z)ining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerate to the right. At time1wy z.ydzoc-p,dl ++j t=0,the ob.yldd1o w++z ypjz ,c-jects 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 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 wpb5 rmjcbycl-brj va /,f/;/4ith 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 resistav - mr, ;bjy5p/abclbrf/jc/4nce.

  13.10: An object is thrown straight upward. The object remains in free fal jzz53p3xg vi;l until it returns to its initial launch point. Which one of the follo5;vx3j zpizg3 wing graphs could represent the velocity of the object as a function of time during its flight?

  14.03: An object is dropped into l k,39ugur4khalz.8u xi i2 *xx9(tmwfree fall. Through how many meters does the object* 9x.9,x l (3kxahztlikur28gmuiw 4u fall 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 ovp1t2ik3 /1q1stu -ibnb l(ref 12.0 s. What was the initial speed of-bn3sri 2elvktiut1/1p q( 1 b the box when it started its slide?

  14.07: Starting from rest, : kn hrixw.rq:y8x+5wdy1-lm 5 zgta (a cart uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what dz 55h. rwd t: yxqxkgi+y8- (1nw:malristance does the cart move in this time?

  14.16: A toy car initially moves to the right at 60. tx -jq:9wrb):5/r afyv,fgmr 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 5r x9fr t w:my-jq, r)/fvbg:avelocity of the car during the five second motion?

  14.17: A toy car initially moves to the right at 60.0 cm/ /ljlx e,8hqpx.u+iep2i war84t1a+k 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 acceleratjalle48phwx8,pxrui 1at/ i .ek2+ q+ion of the car during the five second motion?

  14.33: An object moves with constant acceleration starting withji(ry0ei( j* v 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. Which one of 72uk1dbamd 0otin*l-the following choices best represents the-db o0 ut 2*iak7d1lmn direction of the object’s acceleration during its flight?

  13.26: An object moving only to the w9plf9 b(er,lright completes a 20.0 second trip in two stages, I and II. The average speed of the entire trip is p(f9we 9,lr lb10.0 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 li ajxzcdsakb;j :66/ 8rne 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 cba6s/jx ;rc8d:ja6k z onstant 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 cliff, a small rock iahu83t; srva+s 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 tsua3 hvr+a8; 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 ro89z of32q(zrrh yt8kvmbbcmv21x* p;bot accelerates atr 3pf;ch8bzqv 1tz2mxm9o *r 8yv2kb( $8.50\;m/s^2$ 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 vert rk75rlo c3ile+9jh9qical position 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 obtains dcehk7lrr995 iq+3l j ouring its flight?