94.01: Starting from rest, object 1 falls freely forqmyu;6hk :3x u 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, y ukuq:;3x6 mhobject 2 falls:

  94.02: A car starts from rest and uniformly 3g1fsodnfg: :* (silp accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travel dun p:gs:fds3*fi (ol 1gring this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. It 2s2/km g 9igda zut4k)lands 6.0 s later with a velocity of 40 m/s. What was th9/4g k k zs2umag)d2ite initial velocity of the ball?

  95.27: A rocket near the surface of the earth is accelerating verl9s2lh4jzg : utically upward lg 4jhu 9:2zslat $10\;m/s^2$. 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 bekmwe )h *(c+v4 x*;zowiovns5 moving downwards at 27 m/s at one instant. If it continues to fak4hcn )5*;ox*wovz+iesm(vw ll, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts f( f)*o ame701kev3 ppk939ngtw9t cdooao,dsrom 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 strikes ti v*fyu9m7w0f9n y o.cy.1pnthe ground with a speed of 30 m/s. Assume air resistan y7w9if1 .nfpuy9.m*ynto0 cvce can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/s inwk q,bggpl2, k677cn(6/:ugwwf /(b linzcdi the upward dire6bbw, lkgwkdg z lig2(qw( u6: c/nn 7i7/p,cfction. What is the approximate velocity of the object one second later?

  98.14: How long must t9guil7 . ytd7z degz .32tkb+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 found to be moving downward at 1 3c1o5ws,r; legb bp(l8 m/s. If it continues to fall, two seconds later the obj,o; bl1slw(eb3 rg5pcect would be moving with a speed of

  17.02: A small object is released from rest and falls freely ,bi 4t zywttl*8q fc/,for 4.00 s until reac4ttli, ,c zf/*8twqbyhing the ground. What was the height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched szwc xi (k,i:)btraight 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 )c : ibzkx(iw,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 laj 7ivj, .xsk,lunched straight upward 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 takei,7k vx.j ls,j the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plane has speed 0.4 kyf;9hnfexwru7puh:j-)0nn : ;qf d)0 m/s two seconds after it begins to slide. Ax7u0; kujwne h f;nr)hn -)f pqy:d:9fpproximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower jeit,- en0c7 r8xg1oswith a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s later.nt7oire8cx-se1g ,0j 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 anofe,owi w 0td(*ther, how much higher will it be at its apexfw*i(twe ,0do?

  02.30: A box falls to the ground from a delivery truck traveling a*uj8k5sz8t i at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it tajs5*u8 8kzita ke the box to come to rest?

  03.29: An object is thro.jdpw1 /h23zqyx1kx *anv1k9 o btwx5wn upwards with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, pzxhv yt bkq9 a/2 n1w. kx5j*131xowdvelocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) ah *2tdundd+bo -s6 vm3re thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank fr6vn d -ushd3om2*t+ bdom high to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight u y0) 9 mqpj5t+vqkay5gdoc( po 1ri-i7pward with identical linear momentum. Object 1 has mp7 v 95+gta qkojyd5o)piyqm0( i1-rcass 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 ground as axed// ihy(u7(g f g3vshown. After each bounce, the ball reaches one7g fud3xa/ g (yve(ih/-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 projectile in free fall achiems mh5-v8u1 s8ic py4zved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angl 81vu-szim4y 85phs cme of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. Th wu0.r2g-s xlk6+kxgbe collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit the grok lx 6u.0wxgk2 gbsr+-und? Ignore air resistance.

  06.03: Three student;k- hkb8 f2uzt5ur qr+s were 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 the top - 2+ubr qf;z5kturhk 8and 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 position is x0 = .5ohq p) tb9tq-5 meters and it is moving away fro9 t.o)p5qqb htm 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-like obj9+q1yulrh6 ch cus :7tect 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 uq1 :ut lc9s+hrchy67(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 wn-owc3g5pd ;j(nz6i the top of a tall tower. Half a second later another rock, twice as ma;pgw jci6ondw 53(zn -ssive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is inix w417el5wb6 dygfs.otially 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 gfsyeowx dl41b5.7 6 wdoes the cart travel before coming to rest?

  07.11: A cart is initially moving at 0.5 m/s along a track. The cart comowfy;q5 cp952ph s1 ksgrc(0c es to rest after traveling 1 m. The experiment is repesq;cg2c5 p1chpfos( k5y0r9 wated 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 r66ge)vg c(0b efv z+p(tt hr5from rest and runs in a straight line with a constant acceleration of rg6(pg5ec+ezfhrv 0 ()t btv 62$.5\;m/s^2$. 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 h abo;4.zcc s0 lbf m(h;ds 1bb,rghve the ground. Ifcg,h;h0 (b . lfdb1s rm4;csbz 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 .k1ba1 8d:c d-uvpqgk 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 one-half the acceleration of Object 2. After some time T, the velocity of the two objects is the same. What is tc kb kudd.8a:p-11qg vhe ratio of the distance traveled in this time T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizonj9g ogkx.80, oiqjfy .tally 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 the time of the object’s flight to the ground? Ignore air . iqoyk0xgf9joj 8,.g resistance.

  13.10: An object is thrown straight upward. The object remains in fwlvv q:4 x;f12ynlmlz4uz o+2ree 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 z2llzy :w4o vmxu2+n1lqv ;4fof time during its flight?

  14.03: An object is dropped into free fall. Through how many mtex0g b/ 5lbr)o eaw;a;:-wlxeters does the object fall during the first )bl xgwo are0t/5a;x :e;lw- b3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface in a time of + -.a5lmphltc 12.0 s. What w.5mp lc+alth -as the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerateo4nhf1a3 yit co2;as*s to a speed of 7.60 m/s in a time of 3.00 s. Through whfco32a n;s4oaithy *1at distance does the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five seconds / s-/k43m1*y8jl okjpvl hoedlater, 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 during the five secokd lpj-3 */v kjsl48eoo1 hmy/nd motion?

  14.17: A toy car inititx0bbo 2f)5 q72kg8 jctg ddukzp, p3.ally 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 displacemb,kf)gqdz d2x btgt27k.58jpc0 o pu3ent 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 constanim)tu: x nq3bku9-n(0ww2sn ht acceleration 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 free fall. Which 5qrz9+;jqr ji 7kjxs0 one of the following choices best represents the direction of the object’s accelerj;j sr i79rq5 +zjkxq0ation during its flight?

  13.26: An object moving only to the right completes a 20+.e4l:qh6p/ g g2 awhpxabw1y.0 second trip in two stages, I and II. The average speed of the entire trip is 10.0 m/s.6w4phaw bx:g2a hg+. qlp1/e y 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 compl y0,hvfuqsqv ,v/s 90uetes 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 1vf9/sy,vh 0s 0vuqu,q2.0 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 clmx+l6pza mn440 1bf pmiff, a small rock is dropped from rest. A ball is launched straight downward with an initial speed of 36 plmmz 601m44p bna +fxm/s at a 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 races with a rob w;ftj xrwzir;j:(py*/yl ra2 7cf3: kot. The robot accelcj:jlp ; 2*;riyrw7wzkx/fy:tr(fa 3erates 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 79o9k6uix -vebbyf akis0a*3j( zl .yposition of the ball 0.70 s after release is the same as its vertical position 4.10 s after its relk al .z*ybai0ojsf( - 6v9b37e9iukyxease. At what time is the object first at a vertical position that is one-half of the maximum height it obtains during its flight?