94.01: Starting from rest,;x,ms2n4b v e79ujxsd object 1 falls freely for 4.0 seconds, and object 2 falsxjs;b nd47u,x me29vls freely for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly acceleratl3um mu(k3bsxl -0ldto t881des to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travelmk31tbl u30t8slumd -x (l do8 during this time?

  94.03: A ball is thrown off rgbns,,.h7cte, ixq+a high cliff with no horizontal velocity. It lands 6.0 s later with a velxebtnc 7gh,r, .+siq,ocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is ac j+kemac80s70j86-o8hlz rpl qbvu+ dcelerating vertically upward atovr08m07 alh6 - qpskjj+b+edul8c8 z $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling 9tfj w4:y 62fk2qmzzc 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 a downwak zyj2mf: f94qtwcz26rd velocity closest to:

  95.39: A car starts from rest and accelerates af8e kh/of l 8q7gq)7urt $0.80\;m/s^2$ 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 dr,cz 6s096b0wyzpf ixsopped from the top of a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignorez s6i, sbcwf0pzxy069d. The height of the building is approximately:

  97.09: At a certain time, an n d;lli ,6fh6i4 dw3acg-y+a hobject in free fall has velocity 4.0 m/s in the upward direction. What is the approximate velocdy6fd cha ;lg+nia iw4,h36 l-ity of the object one second later?

  98.14: How long must /(iwcn.7 +d g sd/yqiba $2.5\;m/s^2$ 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 mo 0icud6 n7bek.ving downward at 18 m/s. If it continues to fa7ni uk0cd .6bell, 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-;n(bzxlj t6at p :o9g until reaching the ground. Whatg;j6z (tx ltn o-b:a9p was the height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so tz+) ggky)w i4phat 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 )kig 4pzy +g)wthe 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 4hh; nhx5 gztu)pb:k;.100 kg is launched straight upward so that it rises to a maximum height o )hpxu;znb; ht 5hg:4kf 12.0 m 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 s zyhlx7(q(/mx sv,0gtpeed 0.40 m/s two seconds after it begx7 (g( qz0mthsv,y/xl ins to slide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tord 56 lflt,wpan2tagdv93 d, 5wer with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s la lpr,3,t f2dw9l6d5ad 5va gtnter. 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 initii3phyq4vt-v b/2tvn : al speed of another, how mut: /i v3vntyh-bqvp 24ch higher will it be at its apex?

  02.30: A box falls to the ground from a delivery truck trave gd(rz;7u k*yuling at 30 m/s. After hitting the road, it slides 45 meters 7;ud*k(gurzy to rest. How long does it take the box to come to rest?

  03.29: An object is thrown upwards with a velocity of 3pzv,zf 6 eh4z*0 m/s near the surface of the earth. After two seconds what would be the direction of the dv4zzh* ez6 ,fpisplacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass7 emyxyde3--:4;tprwe s xkp0 (1m, 2m& 3m) 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 height of each stone. Assume xpeyy 0dw7sxk:-e4m- 3ptre; air resistance is negligible.

  10.25: Two point objects are launv2r*o ni iso*guq2w6svc-t; bht 4 ,m+ched straight upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the 6gsq4 wh m-voci b;nrv,to+ stu22 **ilaunch 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 bounc)up)s- hvsa+de, the ball reaches one-half the height of the bounce befor + vd)hu-a)spse 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 achieved itdt* b+ h o0xn1bcjyur.g9 fq .)u3k+0t8 rxzurs minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launch from the horu)hy1ucznqg +tf9 rxur+x3..kd0o 0jr* b 8 btizontal?

  05.02: A pebble is dropped from a high vert3iwmrxu+ 8v j; ihtx8-ical cliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did +i hxj8rutm ;38- ivwxthe pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking gw3k6d-d52wyem5ivgex pw ( + xarage. One student suggested that to determine the height of the garage, they simply had to drop tennis balls from the to2 5e+ wg-d6xedvx (m53kwywpip 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 mov0l*0vc pb f7 qmm,wu+ting along a straight line. Its initial position is x0 = -5 meters and it is moving away from the origin and slowing do 0vmuwpmbcl*q70 f+,twn. In this coordinate system, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like objecmbo::au 7 7/gu,sokjct is pulled downwards by gravity (down the plane of the page) but is constrained to exactly follow each of the fric, sooam: ujk7b/cg 7u:tionless 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. Hae5, d6hv+nw:tdmu)6-l jb, pb ( xaiahlf a second later another rock mh6(,aw epi,dutal )bbh56+vj-d:xn , twice as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The cart como+hq:5imz m*w+d s rz*japz4 0es to rest after traveling 1 m. The experiment is repeated on the same track, but now 4+qiz5:zs* jrmz*a+odmwp0hthe 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.eurw s dgu535u/h2 cd,5 m/s along a track. The cart comes to rest after traveling 1 m. The experim52sd r,hgc/u 5due3 wuent 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 c otichk :(i ta4*bvjf 6mh1 8wi.p/7xuonstant acceleratfa /x * tp61:7tioh4m(kuw.h b v8cjiiion 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 witho vv vm;fzmz-y2c,/ t9out air resistance from a height h above the ground. If the ball falls the first distance 0.zc9mmtzv;v fy,-o2 /v5h in a time t, how much time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerate to the right.12g*g./r-nqmifhamxk, aim 3 39f br kgc.t:n 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 so3-r*a bgxkcn :q,2 i.mf9riag.h /gnm f1tm3k me 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 horizont+uli * 8kafa. fx6gl:vally 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.vl+f f iauxa:l*8k g6 ground? Ignore air resistance.

  13.10: An object is thr u7g*7 7eg8+vr0hkcic- exrw yown straight upward. The object remains in free fall until it returns to itvxgc c7-*87riygkh70 er u+ews initial launch point. 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 many meters does y:0 wxm +tzok v8*/clathe object fall during the first 3.twz c/ la+ kxv08ym*o:00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to+ 1wodbpt0 as) rest across a flat surface in a time of abo 0)ps +1dtw12.0 s. What was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniform 8ynh 8s,:u2ogpsxu4q ly accelerates to a speed of 7.60 m/s in a ti8qnu, ssxp8 4uogyh 2:me of 3.00 s. Through what 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 laterx1/wp8 n+kzl zr f)q6d, 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 represen+p6wzn f)k/z1ld8xr qts the magnitude of the average velocity of the car during the five second motion?

  14.17: A toy car initially moves to thij 8ect 5ly a,,nt;:21c)t *iuepfr fa6nedm .e 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 bes ;c6i: rjtp. yfea)del2 tnfucea8 *t,in1 5,mt represents the magnitude of the average acceleration of the car during the five second motion?

  14.33: An object moves with constant acceleraticzv5gu.6y bx3pae9 0wiu b3u/on 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 mt*fop :vq6( ,q st1gvboving upward while in free fall. Which one of the following choices best rev 1 6q v:gqt*,tp(sfbopresents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.yx is+ h w5tylxva+1s0 80c3do0 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 accelert 0hd3wvyx 8o+x+l 0a5ssi yc1ation 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 an averar:gj +w5tp p3lge 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 1 ltj35p:+w rgp2.0 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 s8asvq(sed h/r/j+ f0dq/js+l mall 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. When the ball 80fa/lh(v+ s/sq+/rsedqjj dhas 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 r0waufd km,41yoad, a self-driving car races with a robot. The robot acceleratek ,awym 4f0ud1s 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 ball(12zyisaom4fbei - y z 0cij5sf :g1s) 0.70 s after release is the same as its vertical position 4.10 s after its release. At what time is thez-1s obfsy0 maj4e)1( ii y5icsfz:2g object first at a vertical position that is one-half of the maximum height it obtains during its flight?