94.01: Starting from rest, object 1 falls freely for 4.0 s:)u k1vb bmymzu1f6o+ econds, and object 2 falls freely for 8.0 seconds. Compared to ob:o)b 1 vm1 +k6uzbfymuject 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a fiois+k7/ tz(dee (f;xm nal speed of 20.0 m/s in a time of 15.0 s. How far does the car travel during this t(oe/ef+ ( mk7xdszti;ime?

  94.03: A ball is thrown off a b c0 hui/z(3vzhigh cliff with no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the init/(u 0izbhcvz3ial velocity of the ball?

  95.27: A rocket near the surface oft).5atgd+t1 xea f0abjyo r q+.jj7-d the earth is accelerating vertically upward atq +) fo+7-axg d t5b1ytaare tj0j.d.j $10\;m/s^2$. 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 3tb(j6; dcjqp at 27 m/s at one instant. If it continues to fall, one second later the object would be moving with a downward velop;d3tjj6bc (qcity closest to:

  95.39: A car starts from rest and9i; kcgakms /px3k t g2b70ih* 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 the ground wit025m 6hw nqhxv67mh gah a speed of 30 m/s. Assume air resistance can be ignored. The height of the building is app2vg6hx 5mh76h0a nmqwroximately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m2ty/8 bxp bzdlmld//(y(.nxb /s in the upward direction. What is the approximate velocity of the object one dx/xmn.z p8yy l// dbbl2bt(( second later?

  98.14: How long mustn4 3 bkydj1+ry 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 found2 h -58nsf9dsdreaob ( to be moving downward at 18 m/s. If it continues to fall, two fd8hdeo(5 9 sbn-s2raseconds later the object would be moving with a speed of

  17.02: A small object is released from rest and falls freely 45dpa 5ov o-n9 i-aktufor 4.00 s until reaching the ground. What was the heightt5o-un-o5v pa k49a id above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straid wj u- lakvl0r/ob 3a96iw40ught 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, whirw6iu/ka b 3lua0o49-v j wld0ch 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 upward so/:k) y)vw6.dsyzyl f b that it rises to a maximum height of 12.0 m above the launch point. Ignore air ybfl ) ky6:w/vdz s)y.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 speed 0.40 mni ;50c 9hubwiqs4m7b /s two seconds after it begins to s4u7 s05qm9 b;iiwhncb lide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower with a spes+7 ,l a(essna1ghf)med of 15 m/s.sfa7n+ , malesg1)s (h Coin II is dropped (zero initial speed) from the top of the tower 2.0 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 ty6 z28 : (5tx4q-gshwta fijiahrown directly upwards with twice the initial speed of another, how m(ta:w45s j hy2x f-6aiqgit8 zuch higher will it be at its apex?

  02.30: A box falls to the ground from a desb ,ezwld 3f* 8y u58jt0sr+tjlivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. Howrjsewsud53 fzy0t,8+lt*bj 8 long does it take the box to come to rest?

  03.29: An object is tg1b/cwok-k(mn9bz: 0 +kxg xmlszs;5 hrown upwards with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displac+zmwszm g sxnb-c1g9k;lko/ 0(x :5 bkement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of diffzfn)kr y03 3coerent mass (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 zc o0n3 )yrf3kthe maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight upward with ide9r -u :uss 42qnnbmt9wntical linear momentum. Object 1 wsnr99stb -uq42 :mun 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 ground as shown. Afvctp rhk e(lzx04 pop:3:c/(wter each bounce, the ball reaches one-half the height of the bounce before it.vwkh ptol:30:pz(p4c ce(xr / 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 is mvk68cj d41fall achieved its minimum speed during flight. If that mini1sv 6mk8 4dcijmum speed was 15.0 m/s, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The collision of t2fucnl0b1 hqyk8 3 kf1he pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit the grl8k2uq0ch fkyn1 bf13ound? Ignore air resistance.

  06.03: Three students were arguing q1qi e+jhu4)cabout 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 and time the fall of the tennis bjiu4)qc1 he+q alls. 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 li6,dg6bh9j rjr aqq8 1sv7zf,ine. 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 posi61i da,qqrj8g9rjz hbf6sv,7tion, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled downwards by gb 8ns an-o7huu 50(//vhv0 uwopou:gyravity (down the plane of the page) but is constrained(gv0s: hh nu87uanpo bouoy-50 vw/u/ 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 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. Half a second later1;rfcxq(1sp u;wyo h - another rock, twice as massive as the first, is drosxq-hw;1fo( pcr;yu 1pped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a trfb. dk 54jtc2mv 9inm(ack. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is initialb cv .m(dtm f9jk4i25nly 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 tr-cdmr q0 td*0jack. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is initially d-c d0jqt* rm0moving at 1 m/s. How far does the cart travel before coming to rest?

  08.03: A dog starts from*3 8byfpt2ia i rest and runs in a straight line with a constant acceleratiob 2a8fp it*3yin 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 h v*;*+8yl:bu7yyap qs kdsvy (eight h above the ground. If the ball falls the first distance 0.5h in a svb8q*y;7 +vl* pyukd sya(:ytime t, how much time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerate t4sqnp j+ vpl48o 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 thevl8n pps+4j q4 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/s from a heigvt27 had xws mdk69+ ;rpw.mh/ht 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 objh7 wmdt;2 /6wm.pah+ s9k xdrvect’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The obje/a9 0mlvhjsrt 4p5c+ sct remains in free fall until it returns to its initial launch point. Which one of the following graphs could represent the velocity of the ob sjr cl +/4hmsv09at5pject as a function of time during its flight?

  14.03: An object is dropped into free fall. Through how many meters does the3t.rt);a :3v(2bhbrc l)jwlm t wdcq; object fall during the firwdhj2;)3)cclbrt:a3 . lqwrtb(;v t mst 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flatc yuu9yem:33c surface in a time of 12.0 s. What was the initial speed of the boxccy9umuy3:e 3 when it started its slide?

  14.07: Starting from rest, 6zoatpuk9u: c3 k2r p5a cart uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does the cart move in th96kt :pp a5ruc2zu ko3is time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five sej01 :)ifn9p+* r(pxnt o*+mae my skdzyb* k+wconds later, the car is moving at 40.0 cm/s to the left. The total displac kk fybmsd:+rxpm+na)p joyw0*z(i+*n*1 t e9ement 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 cmg dftg8z4 ye2-/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. Wfdg48egy2tz- hich 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 accelerati 03j*4 gcw g..,aka7vkdslfes 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 ml 4j:i; t*4b slez:ktioving upward while in free fall. Which one of the following choices best represents the direction of the object’s ell:j: 4;t4*ki bzistacceleration during its flight?

  13.26: An object moving only to the right complete/ gfe8t/y4 endiq4-i 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 st ie fenq84ye//i td4-gage 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 completes:7 1a2iobgu ; mpbb2vuas-gq6 a 20.0 second trip with an average speed of 10.0 m/s in two7g2am1;gvuu p 2b abo:bi 6qs- 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 frnmy; - rs i:bok*(0wkhom 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 has fallen 28.0 m further than the initially dropped rock, what is th0wh i k(y-k *o:mr;bnse speed of the ball relative to the rock?

  16.36: On a straight road, a self-dm tnw c2eo21i*riving car races with a robot. The robot acceleratesm1tei* n2c2ow 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 positionxj gd71gnc.v m f3gb91 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 objec9j vggbcgfx 1n7.d31mt first at a vertical position that is one-half of the maximum height it obtains during its flight?