94.01: Starting from rest, object 1 falls freg na.e kwewkfp:4r o-; ys1a)5ely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, object 2 fal k1ea;ps:erw w yo)g54n-. afkls:

  94.02: A car starts from rest and uniformlys c,8/* en f(gx3hmt*4qrruu e accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travel during *8, r/sngq*cetfu 4xu h(e3mr this time?

  94.03: A ball is thrown off a high cliff with no hornv,6c a;,tdky izontal velocity. It lands 6.0;,v,d6nckya t s 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 eartzewkv8(zs6v1 ),b14qf zx f*bxooy s0h is accelerating vertically upward at 1vzysf,) f60o4x s*(qvowz1bbxez8k $10\;m/s^2$. 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 down2x)n(e7 lo rc g bk+,h:qyyw.+q fkd5dwards at 27 m/s at one instant. If it continues to fall, one second latey,hlqn d:(byqk wg75)+fo c.+ kxe2drr the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and accelcpfzjx/h6e7tf9 c 26ierates 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 strikes th jc t3ne2bpx-vi b2(m(9zu6zie ground with a speed of 30 m/s. Assume air resistance p-n( eum t2i 2ib3x69v(c zzbjcan be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has veloc5v.up /,ilgae;fglo, u1k4p sity 4.0 m/s in the upward direction. What is the approximate velocity of .; oki sepa4fpgglvl5, ,/1uuthe object one second later?

  98.14: How long must axvx pvo-u0ng9/ex- 4f $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling object i*e2a c.tzwr) us found to be moving downward at 18 m/s. If it continues to f*ctwr a.uze2 )all, two seconds later the object would be moving with a speed of

  17.02: A small object is released fczyggdi * 9c324 /rs/u9yhnmprom rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground from whic/dgu/cry hyp9 29g nsm34*i czh the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so/nx y8,n2jd *kq n5nno that it rises to a maximum height of 12.0 jqnxdn 8nn5yk/n, o2* m above the launch point. Ignore air resistance. 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 upwi*u++v +6,,n 5prwnf xlzbkzrard so that it rises to a maximum height of 12.0 r,* ufl+nk++wbnxv6,i prz5zm above the launch point. Ignore 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 inclined plane has spee-nulq2sf5rfs3 le. f/*z( fmmd 0.40 m/s two seconds after it begins to slide. Approximately how far (-5ff2lensmzm /3 .qs*frfl udoes it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a wg1 xkm,kh4 n2100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s later. Ag4kh1x, w2 knmssume 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 twice the inm)u7) 2:etn 4p.a7htxfwqrc5a e/cb fitial speed of another, how much higher will it be at its aru:cm)4 5tbehqecfp2f/n ta.7 x a w7)pex?

  02.30: A box falls to the ground from a delivery t2g 1 2z 9wpro6vbigvr;ruck traveling at 30 m/s. After hitpgv 6 wzog;rvr9 b22i1ting 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 of 30 myvjg8yy.2 fg )/s near the surface of the earth. After two seconds what would be the directioyg2yf gvyj .)8n of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vertically upwar)jwdqa j ko.nb-k(j24d with different velocities (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 negl2nok(ajjw).- j q kdb4igible.

  10.25: Two point objects are launched 5lxp3-ma g tx xi79sw2straight upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If object 2 has mas2xx-wa9 75gpls3 t ixms 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 s1w6 ams dz4u4vwkpv (5hown. After each bounce, the ball reachs 1upv4645(amw vd wkzes 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 bounce?

  16.21: At 1.94 s after launch, a propo(kh8jk*m6nvlpzlkq* s )e*:47i cf6b m ed.jectile in free fall achieved its minimum speed during flight. If that minimum speed wke*eq 8kd).m*vkp sb 6:ijzln7fmop(*h6l 4 cas 15.0 m/s, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped fi75sy(o l /nne52b25ib gzrs6 mvj :kwrom a high vertical cliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebb2s g5l:reivi5nnk2 (smz5/ bby7wj6ole is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students wer +wx1vg c kwsn3ahw 5dw.0y/z1e 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 thegwn v 0.yawzs3+ 1wkd5xcwh 1/ 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 positi;q*;dxiut-* zz4bms j on is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system, the signsu ztxqbi md;*z- *4sj; of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled downwards by k 31mxpss50bkg0 yf :mgravity (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) nemk f3x gb0:10m5s psykcessary 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 thewz*-6g-9wrzugs r,tj(2i kqn top of a tall tower. Half a second later another rock, twice ar in9-ww-6jz2s (,*g kqrzgtus massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initial9e0.0r bfn9lyy o0i+ hkmac+gly moving 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 now the cart is initially moving at 1 m/s. How far does the cart travel before coming to o l9k n+0fh.9r0ci emay0yb+grest?

  07.11: A cart is initially moving at 0.5 m/s along a trackytm /acf8u4z 28 ,6q:id bjxwt. 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 does the cart cj4y8/dmta,q z 826bwi u:xtftravel before coming to rest?

  08.03: A dog starts from rest and runs in a straight line with a constant a a6u7boe+m aa2cceleratioa2 7b6o+eauam n 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 f* mw9nw8jjn+xm96euwrom a height h above the ground. If the ball falls the first distance 0.5h in a time t, how much twn969x8 uwwjjm *+nmeime is required to fall the remaining distance of 0.5h?

  10.38: Two objects both moxw6; l6pk-c vcs fz ;-odwf3i p8w73nkve and 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 has onfwkv7z-l ;-c8iw xf63w36 s pnodcpk;e-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/st dxj d /2(uwztib58i4 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 fi( 24xzutbtd/i 5 wdj8light to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward9 yw6-a -h gp4rn243(kl qa,ltyirle o. The object remains in free fall until it returns to its initial launch point. Which onerp42aoyn,-9-(ltha 4y6rw qlieg3k l 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 int. 6a k19eoe3z6nimh wpo free fall. Through how many meters does the object fall durio e p9ne.aizk1w36mh6ng the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat s./egm ; dp-sdpurface in a time of 12.0 s. What was the initial speed -edd s/gp.mp; of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 7.60.efga(.73( mwbormrg m/s in a time of 3.00 s. Through what distance d b.gwr(73(fome g am.roes the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five second.ky,unzw h:)g b k/2 :lacnsm+s later, th+b )gk:.zywlk n2/s,hucm :n ae 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 during the five second motion?

  14.17: A toy car initially moves to the right at 60.0 cm/s. Five seconds,q g mca6a9 4ogads4,h later, the car is mo 4,d,aqh4 sa 9oc6amggving 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 acceleration of the car during the five second motion?

  14.33: An object moves with constant acceleration startin;mdn9wilv 6zf0c:* m gg 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. Which one ncf lfk. ;)ika 8nq,taoc0mgs60/o3h-4f ov eof the following choices best represents the direction of the oet q0kfcgs3nfal ik oa h. 0/oo;n6c) f-v,84mbject’s acceleration during its flight?

  13.26: An object moving only to the right t896wdpka i4mcompletes 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 ti8d 9maw6k4p 8.0 seconds of stage II?

  15.32: An object moving along a line completes a 20.0 1kfnpkll )tm r /6l4qk0ebx43second trip with an average speed of 10.0 m/s in0 qk34 lxelrlpn1/tkm6bf 4k) 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 seconds of stage 2?

  13.33: At the top of a high cliff, a small rock is dropped from rest. le lao y (w6hf8wd(c ,wln/;4mA ball is launched straight downward with an initial speed of 36 m/s at a time 2.10 s afteyw mn(c f,a(4wh/eo8l6w;ld lr 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. The robot accerq zng hcx*1b0j;;dd;lera1*djrdx; z;;q hbcn0 gtes 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 poq*03g-twmqjjj:d h k( sition of the ball 0.70 s after release is the same as its vertical position 4.10 s kqt (-h0:jm g3qw*jj dafter 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?