94.01: Starting from rest, ob8ac in86x dyn6ject 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 8iyacnxnd668 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates d -ihq p:k*8cnto a final speed of 20.0 m/s in a time of 15.0 s. How far does the cn8cq p:hdi k*-ar travel during this time?

  94.03: A ball is thrown off a u/lersp7chbhbpa9,22)d 3 zt g1)s gx high cliff with no horizontal velocity. It lands 6.0 s later with a velocitz9shdsxcbp u/lae)b)t p,r2hg732g1 y of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is achtxu71 dzvi,8 h6r,m ncelerating vertically upward at,xmv 6zt8 hd,7urnhi1 $10\;m/s^2$. 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 m/s at feqz8l a +a4omx/e2 5ione instant. If it continues to fq e z/m+f5aa42 eixl8oall, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and acceleratp,,qw) pi m .0m7jl7ytv2mssqes 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 droy 9 jy2jjc1p*ilb3v(npped from the top of a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of the buij1 3ijyybv(c*p l2n j9lding is approximately:

  97.09: At a certain time, an obje3rlq (d(oq: gao5poo2e , q4nvct in free fall has velocity 4.0 m/s in the upward direction. What is the ag(o4,ra2qqo e3 q:o(dn 5 vpolpproximate velocity of the object one second later?

  98.14: How long must a cry meh)rx*cjn7:n( ,$2.5\;m/s^2$ 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 downward akg*0ymbk5wf d2c)1dbg s v 5h:s qm9-qt 18 m/s. If it congfds sgqbdh21mc- bky5)vmw:9kq 05 * tinues to fall, two seconds later the object would be moving with a speed of

  17.02: A small object is released from rest and falls freely for 4.00 s until qv:fs.7/ock uxkm;n(qbzy.m- q (zi0reaching the ground. What was the height above th ;mm0..vk7oc qy (zfxzsbqn:ui(/kq -e ground from which the object was released?

  11.06: A ball of mass =0.100 kg is laun 88o6/23bzry imcecbiched 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 chcmizc8 b 23yo6/bir8eoices 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 upward so that e (xvgv; y5nsq1o3ol ,it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much time does it take t3xl5 ov qe1 yg;(nso,vhe ball to reach the maximum height from its launch?

  98.31: An object sliding down an iv)l -yg0bezv9):o k urc), 8rr.gaupu nclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does it travel in thr rvu9lgko .zy car,8)p)bu:-) guve0 ree seconds?

  98.40: Coin I is thrown upward from 4(d cwxit 5zwcu,a8j 1;dujf,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 21uxzww auj; (d d,ic84, 5cjtf.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 5c.)pw qm3nkr.z jy3guz+*nfupwards with twice the initial speed of another, how much higher will it be j .)fkc 3npy3zu. *nmwrgqz +5at its apex?

  02.30: A box falls to the ground from a delivery truck traveling at 30 m/sw;k:r 6p:6wrc hjlq a/dse21e . After hitting the road, it slides 45 meters to rest. How long does it take the box to come to res;hj :2rrd:p6w 1wsqk/l6 aeec t?

  03.29: An object is thrown upwards with a ve ka,cowq-nn nbx1+d* 6locity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, v1a *nnn6b+k-o ,q dxcwelocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1qzo+f, x.-q(im ms5dim, 2m& 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively).fsq. i(m zoi+5xq-,d m 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 with identical h5vpykg y. pqe7r ).s.linear momentum. Objqh)vygpe .skp5 r7.y .ect 1 has mass M and 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 4xfrefs x,( *gground 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 fex, 4 x*gfrs(would be the time between the second and third bounce?

  16.21: At 1.94 s after launch, a projectile in free f*y c;xlfxa-o k e4qfjxgn(:45all achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launch from the horizontal5*yae:xfcl x 4gx q;-fn4(jok ?

  05.02: A pebble is dropped from a high vertical cliaz 4. (7+oyecm6vinf0,1- xr xchzi fhff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is droppedyf4 crifz-c0v+eo7n6zxhhx.i(, m a1 . With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing aun s 3zjmrt5a-6r-j b*bout the height of a parking garage. One student suggested that to determine the height of the garage, they s3rb-u a-s5m6z tn r*jjimply 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 linfm-9k ij,w e/kedp; m+e. Its initial 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, initial velocity and accelerat; mkj/pe-iw+ke 9fdm,ion, respectively, are

  04.38: A small point-like object is p 7(g1h er.dasxulled 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 as 7 gxh1rd.(eand 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 h62y2 x-on7sxi2v ye jlater another rock, twice as massive as the first, is dre26 xh -2inoyxsyvj2 7opped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.9,p wmer3 8ftshx8gu 95 m/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the sag398 8x fesrhwu9p, mtme 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.m:;+h 2wvvhfo The cart comes to rest after traveling 1 m. The exv h;m2 w:+ohfvperiment 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 conszx7- i;svls)tpaun( 6 tant accelertl7)unxs-;izsp 6a v(ation 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 height h5l0vxv4ij7 tc above the ground. If the ball falls the first distance 0.5h in a time t, how much time is required to fall the remaining distance of 0.5lvx 7c0t4j 5vih?

  10.38: Two objects both move and uniformly accelerateng+-(+d g cyc:aw 4,ag+x50j geqsrjn 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 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 txwg cs +nyd4e: rcg(5q,+gngj 0j-+aahe distance traveled in this time T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizontally with speed 1+o2y97,idq-h n24ilnie eoja 0.0 m/s from a height H above the ground. The object reaches t2 ny42n oao 7iqd9-+ihejel,i he 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 s 9zmjsih42cdnz6qic 6t aa ;)9traight upward. The object remains in free 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 flightnzq9 6d zaic a69;smchj )2i4t?

  14.03: An object is dropped into free fall. Thrv-jnb8 ax8o y0og,e g2y4hi2 eough how many meters does the object fall dur4eoe- y, i0 vhggo8a22nb8 jxying the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flatv(bxpkjq ;1 (25xvxnmug*e )g-s; swg surface in a time of 12.0 s.v(g eq*)5x xmw;j(xnku;1g- vg2b sps What was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart unifore.nqss k5*p t 1ms78dmmly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through whats*sp5n mtq1 78emk. ds distance does the cart move in this time?

  14.16: A toy car initially moves to the lz:k b 9(i mif lrqhfw-h;f.h9rs/5d*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 of where it started. Which one of the following choices best represents the magnitude of the average velocity of the car duri9il(i rkqfsf;dw.bhrl9 mfh5 :* z h/-ng the five second motion?

  14.17: A toy car initially moves to the right at 60.0 cm/s. Five seconxx8-o6vz-c7q jked*l5f:f3t a m z9z zds 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 le : oklxz8ztq9dzz m*a5fje7- fv-6 x3cft 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 acceleration starting with veloctgh pnr)9ui8 8ity $v_0 = 5.00\;m/s$ 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 initiall ; 482ndavglway is moving upward while in free fall. Which one of the following choices best represents the direction o;nw8d4a lv a2gf the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 second te 8x+qkla6 ofjdqovjtz/f8r2- + .+jirip 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- eol/o2jj8f+ d+rzvf+.q8 t6qkixja 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 vni4;g 0g h0uka line completes a 20.0 second trip with an average speed of 10.0 m/s in two stages. During stagk40;iu0 h nggve 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 seconds of stage 2?

  13.33: At the top of a high cliff, ;p6bc 0hwz).a w x,u.uqog/kya 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.y0 q ,pbw zcga.ok; u6)u/hxw. 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 robb vjt.sr iaq)-oa*w8s 07q/t) d3sp i psqm5e9ot acceleratestsaqar-b9 e)*. stw po)ii s8v pmd0q/5sj7q3 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 of the bal,4;saj2c9k qit;l ;y:t q itezl 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 oi;t: c9q;q zk2tly it 4;ja,esne-half of the maximum height it obtains during its flight?