94.01: Starting from rest, object 1 falls freely for 4.0 seconds, hc7ye *r5 n6a:,ftdcwand object 2 falls freely for 8.0 seconds. Compared to object 1, objd*c:f7rt nacy 6eh,5w ect 2 falls:

  94.02: A car starts from rest and uniformly acceleraevfl.,:m c( ighe2sgk ejyi )56o*it +tes to a final speed of 20.0 m/s in a time of 15*)jhfe sil.kco itey eg g2(5: v+,m6i.0 s. How far does the car travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. Itd-k78x ewh0kp lands 6.0 hwdk p8 k-70exs later with a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the s,ejy/cj68sm n5vj-n c ef .wy8urface of the earth is accelerating vertically upward atjfsj-8yc yjnc.wee m,/n 5v6 8 $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling 1cxeu )pwp50 4xb:zsc body is found to be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be moving with apx bw4p uec z5xs0c:)1 downward velocity closest to:

  95.39: A car starts frosvg(./ uoq 0kem 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 strikvxkpgxy1 t2)re) * y7ees the ground with a speed of 30 m/s. Assume air resistance can e7xvr)eptyyk2x* g) 1be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.(euxf8xa49mq85 s mu:t fmj3b0 m/s in the upward direction. What is the approximate velm m x a(8 uu8eb95ft:j3f4xmqsocity of the object one second later?

  98.14: How long must a b c:knh o,yee66)+ :wdnqs,wv :d :gou$2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling object is fori yo3hh,6 0u4t5ykjsund to be moving downward at 18 m/s. If it continues to fall, two sec6ks, 03jyouhih 5r yt4onds later the object would be moving with a speed of

  17.02: A small object is rel mvx)b. 6(zyeeeased from rest and falls freely for 4.00 s until reachi v). mzeyb6e(xng the ground. What was the height above the ground from which the object was released?

  11.06: A ball of mass =0.100 z q/kfk03b xxz4kq,n9kg is launched 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 the magnitude of the netzxkk,39k/qn0qz4b xf 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 sf g(a1.k(ktn )gxbf; jo that it rises to a maximum height of 12.0 m above the launch point.)k;tk 1gxjf banf ((.g 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 pl8e3- (5d*ekljxp-cb3 fnga e oane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far8jex * neeba -lcd53k-3(pf og does it travel in three seconds?

  98.40: Coin I is thrown upward from th3j)d2p .e2 fbcemo.iae 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 2.0 s laterae2 fc 3 pj.moieb).2d. 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 twice the initial speed of h u7rhsy bmk v rlz:rn(hd /xe/b8(0,2another, how much higher will it be at its apex8b/r(kb2yz de v s/(7nhhm rrh0:xl,u?

  02.30: A box falls to the ground from a delivery truchu2vnxjb6 e- z5(7udqk traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take theq( 7vxjueh6 n5db2zu - box to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/s neac+t4, rmjgn.pw7 * cdtr the surface of the earth. After two seconds what would be the direc, pc* 7tt4dwcr gnjm.+tion of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vertically upwar5d2h zkf,w4 gfz e+,kwd with different velocities (1v, 2v& 3v respectively). The d2+g hw5z effdkz,k4,wiagram 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 l gi5o4.htv3wdnvg*6 upward with identical linear momentum. Object 1 has mass M and reaches a maximgvh 6i4tn3* 5 wodv.glum 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 shown. After each bouo6, +1y4d ;nn9hnrrvckn(dkrnce, the ball reaches one-half the height of the bounce before it. If the time the ball was in the air between the fio9n,+nh;c6r1 kdvr nyk4 n(rdrst 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 projectile in free fall achieved its mini) e*tsgazu (pp)m ,ii3mum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launch from the horizont)ipsme,3 atpu g)(iz*al?

  05.02: A pebble is dropped from a high vertical cliff. The collision of the peb0f z 26-oltaxxble with the ground below is seen 1.50 seconds after the pebble is dropped. With what l2a-xztf o60xspeed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking garage. O.p ro(y7hs ob/ne student suggested that to determine the height of the garage, they simp.7oprohy/ (b sly 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 asn/j7l s:-gqjq/ qawh0o+ 8td 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 signs of the initial position, initial velocity ans0: l8//gd q+-a7snhwtqojjq d acceleration, respectively, are

  04.38: A small point-like object is puwjl+a j /tzw; up90p4glled downwards by gravity (down the plane of the page) but is constrained tjtw +j 4 apw9gup/z;0lo 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 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. Hav1yer j.pjx ifz8*kvh-p1+fl sp73 l3 lf a second later another 1k-1 *pl33sezj+yv8jpli7fpxfh.vr rock, twice as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially movingv1j-n smb+w:a p e uqs+vygz7g65 ;,f8ca,sb c 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 ini1e n 7 vbyc-5u;vcbswm+g6g: s ,faa,+s8 jpzqtially 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 alod c;a+0aggui45i m- 4mgvb.glng a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same tu0amm ;cb5lg 4g agdiv4+.i -grack, 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 congk.(kj h ;tdw0stant accelerati(jk0. t;wdkg hon 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 6l0 nj4ze6 qss+brs1vwithout air resistance from a height h above the ground. If the ball falls the first distance 0.5h in a time t, how much time is6rn4 lbs q0+v6s s1ezj required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly acceleratezy,qf j41 dt3x9np,fa to the right. At time t=0,the objects are at the samxa13npj,4,yt9 z qdffe 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 bpk/4i j(x9qr pq/h b8f:qx 1.hiwu k4horizontally 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 thhbq k4h q841(/ x 9p.r /fwiu:bxpkjiqe time of the object’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. hmttd2q+ur q,8p)sq u7wf.5zm7c/s kThe object remains in free fall until it returns to its initial launch poi +cwq/qh7tukfm dzmpr8u.s7 )5,tq 2 snt. 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 m+0o8e6 yb6 h+nibsnxmany meters does the object fall during the fir6+ixnb o+m8ns hb06eyst 3.00 seconds of flight?

  15.02: A box uniformly slides 7.5x-y2.r5s: kuds ;qxvx 0 m to rest across a flat surface in a time of 12.0 s. What was the initial speed of the box when it started its slidkvyrs:. s25xqu -xd;xe?

  14.07: Starting from rest, a cart uniformly accelerates to a speed k o4(/zv9utw 0 ciu2hzlma/2pof 7.60 m/s in a time of 3.00 s. Through what distance does the cart mov/zwklt2vi(p/4zu uha c0m2o 9 e in this time?

  14.16: A toy car initially moves mbpnr5y-oz s *l/of/:c: a(mrfx3 5pi to the right at 60.0 cm/s. Five seconds later, the car - o*5 xrr5ply (z3af:fom:bi/cmsnp /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 initii u w3 hc/v18e-hpwx698u 3a8jk lelrsally moves 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 is 10.0 cm to the left of where it started. Which one of the following choices best repreelvh1wlw86a8j i8hu3x-3p/u9s kre csents the magnitude of the average acceleration of the car during the five second motion?

  14.33: An object moves with constant acceleration starting g:qp9vy7f d2/3y hfde 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 whilerrj*4xji/z,j dwu . ,z in free fall. Which one of the following choices best represents the direction of the object’s,d./ *iuwx rzz,j4jjr acceleration during its flight?

  13.26: An object moving only to the right complet1dtj:esd/ bx+-toogds6rar 9 d c;5e5 es 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 mo:cad;j r 6edb5etx rd-s91d+ og5tos/ves 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 with 7amuo+(jz7wf- q3vwr an average speed of 10.0 m/s in two stages. za(7v+ jw rm-7uwoq3 fDuring 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 heyjnq r3bk he7/ wd v(:n:5o(cigh cliff, a small rock is dropped from rest. A ball is launched straight downward with an initial speed of 36 m/s at acv7hd/qb: 3wr(o (5:j kenyne time 2.10 s after 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 y1ovrme7q5e jiz)td,fh*y4b*1ng, b races with a robot. The robot accelerates avbjy g dmf**5 1,noizy4ber7qt h),1e t $8.50\;m/s^2$ 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. Theyc d7c1 ./pgv)ld k;bx vertical 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 ;x7d/g.c ylk cdbp1)vat a vertical position that is one-half of the maximum height it obtains during its flight?