94.01: Starting from rest, object 1 falls freely for -, nk1e)zeeq an,whg/4.0 seconds, and object 2 falls freely for e)n/eanzhek, 1, qg-w 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from reswn +e,z33 mnl)ks t2kft and uniformly accelerates to a final speed of 20.0 m/s in3 t2knk) s,wm ef+zn3l a time of 15.0 s. How far does the car travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. It laa sz4kse,hrm4e:s.y6 nds 6.0 s later with a velocity ofz. 4y6,s4:hakmrses e 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the ea4 +:d qz,a (kl shgxided)(6o6j)tatbrth is accelerating vertically upward aq,+aad 6ti6e gd 4(z )s)hkjt:( bdloxt $10\;m/s^2$. 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 beeo8 ljz0h* 0c5p7wh qp moving downwards at 27 m/s at one instant. If it continues to fall, one second lat e cl75pop0qw*h0h8zjer the object would be moving with a downward velocity closest to:

  95.39: A car starts frok v4uw83g c4oum 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 the ground hn w*h7ad5bh- with a speed of 30 m/s. Assumehhn-5a*7dhb w air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velo h*q 10rh3lu msrl**dwcity 4.0 m/s in the upward mw0r *lshu*q r3hl1*d direction. What is the approximate velocity of the object one second later?

  98.14: How long mustrje-c8:a w /uf 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 movin1c9 4p,rn cfrb;e w8.-lx zpiqg downward at 18 m/s. If it continues to fall, two seconds later thw;i8,p -9elcfbz. nx rcp 4rq1e object would be moving with a speed of

  17.02: A small object is released from rest and falls freely for 4.00 s until rmzua*-5n a hm6b sly:9+u (xgxeaching the ground.haal nm5g*u(myz+9:xu6 -xbs What 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 s*um/ v*amxsgtold - o jmq16y7i6,kd6o 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 net forcmkumxio tgad1 vs67l-jom*6dqy *,6/e acting on the ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 kg is-wpg 5,8;pn*t.a b hmpavzywt,:p h 2z launched straight upward so that it rises to a mpz;tvgtw:p . n,w*8by2 a,-p5phah m zaximum height of 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 wvram11) u v6uspeed 0.40 m/s two seconds after it begins to sli aru11uvwm)6 vde. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower wi3mpye3ucctit ,+ 2-v eth a speed of 15 m/s. Coin II is dropped (zero initial speed) from thitye32e,muptvc- +3 c e 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 thrown dkks .6s;vhvfx0g d 4xz+xwqgi9/ (. cbirectly upwards with twice the initial speed of another, how much k/9gqs d k.f+zi4 vs;w6bgvhx(xcx. 0higher will it be at its apex?

  02.30: A box falls to th2ltugyb fc /-qvz9u*,ux l n,5e ground from a delivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box cng fqly u5, t/b,vxzl9-u2*uto come to rest?

  03.29: An object is thrown upwards with a vez76r:f h mpsk7locity of 30 m/s near the surface of the earth. After two seconds what would be the di6k:mhz s7rp 7frection of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vea*4) 6((jdak dt0/dwdmbgvp ertically upward with different velocities (1v, 2v& 3v respectively)vj/ )a0*p4(mtwd6g dked bad(. 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 negligible.

  10.25: Two point objects are launched straight upward with ideh/tnj60 q;xzg ntical linear momentum. Object 1 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 tnz0gh x;6 /qjthe launch point in terms of H ?

  04.28: A rubber ball bounces on the ground as shown.skh (uwsspz+mesnvma;+pz85 s:y( xw49 db 8) After each bounce, the ball reaches one-halfs wds:w8he+8() uypss avn4mz9z m+sbx5p k;( 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 3ah8 d,uaz-;g .y 9vx* ujqx*gn bd8uxlaunch, a projectile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launch from the horizonxqu.3; -,b jz 9 unydu* 8hdvg*8agaxxtal?

  05.02: A pebble is dropped from a high vertical cliff. Tjk/* ggm f)x+ f/ sae;p.2dvrh rpqob1bp.2g:he collision of the pebble with the groundr q.)spbrgmpg2e*b ok 12d fhvf+x.p;/j/:ga below is seen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking garage 9zpm-f ;/d-ntmjq uu:. One student suggested that to determine the height of the garage, they simply had to drop tennis balls from theq - mfzpm: j;-un9u/td 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 moving75u rja37hp:m oe y6ri along a straight line. Its initial position is x0 = -5 meters and it is moving away f7 o7 a:3m hr6ji5rpeyurom 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 object m3ktmtf +a uj)m:4o4jis 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 (T) necessary for the object to be released from rest at point A and travel to point +ftj a4m4t:)3mkuj omB. Assume that in changing direction that there is no loss of energy and that it takes negligible time.

  06.13: A rock is droppod myj7 n)xygg527. xwed from the top of a tall tower. Half a second later another rock, twice as massive as the first, is dropped. Ignoring air resi)doxj gx7 yg5n.w27my stance,

  06.18: A cart is initi)ro,tx)d-f b o x(6fsrxt hkym8+*m x9ally 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 comin fx+mo db9 )ht *m ,sxr6f(x-ky8roxt)g to rest?

  07.11: A cart is initially moving at 0.5 m/s aledohk+ 5n-i (m5)jljjong 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 1m -5jj+)(okd jlh5ine 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 constant accele 5kfst8fsnu aubi0j.+i2c 7j5t0 n 7sjsbac +5.f8kjif5iu u2ration 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 , io9 ay;w,j9o2+boelz vyf z-without 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 2 zj;v9, leab yoof-9 ozwyi+,is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move q2y vljiub3g hc)3p70 and uniformly accelerate to the right. At time t=0,the objecbic qljh3gv7y)30 2u pts 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 the distance traveled in this time T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizontkx+ yrjf.v (zzh8y-( s4 :;dbm7 zjgn7oycq.nally with speed 10.0 m/s from a height H above the ground. The object reach +jxonk47myc v:.z(zs.yy(-q z;h rnj d78gfbes 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 resistance.

  13.10: An object is thrown straight upward. The object rema;6*8d;j(,nw ilz rsac 8unw gcins in free fall until it returns to its initial launch point. Which one of the following graphs could represent the velocity of the object as ww8 cjnsgd(;8 l z,an*ur6ic; a function of time during its flight?

  14.03: An object is dropped into free fall. Throurp-l(9wc+ s-tuvo 4k1tgd4cagh how many meters does the object r4t w+-p4d(usca9gv-klot 1 cfall during the first 3.00 seconds of flight?

  15.02: A box uniformldb q wv ./5by,-blydgg1z18moy slides 7.50 m to rest across a flat surface in a time of 12.0 s. What was the initial spe b dq omy1vg15gyl,8bdbzw-./ed of the box when it started its slide?

  14.07: Starting from meu:8w; )cygi rest, a 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 thiwe;ui m gc)8:ys time?

  14.16: A toy car initially moves to the right7(v6hk3 kow;iw4k lrg2bz q2 s 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 w24k6qzrv kok3;g (hli7sbw2following 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 tw2kk*opecl - *he right at 60.0 cm/s. Five seconds later, the c- *klpk c*2eowar 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 acceleration of the car during the five second motion?

  14.33: An object moves with constant acceleratlmuj:6k ru n *,o-qe,mion 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 initiallvi :m0szvud2s (q43 dey is moving upward while in free fall. Which one of the qz de2vmssiv u03:d4(following choices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only il(4*j qzqvue.bwh9(*ft c7vto the right completes 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 thtwc( 9 uj. l(vbqfe*q4 7hvz*ie object have during the 8.0 seconds of stage II?

  15.32: An object moving along a line completes a 20.0 second hlghn9)up508vencziqlfh ((*ie2 y- x;h cg/ 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 12.0 secon h(ncgf-uvlchpz n gqex)e5i*;9yi(lh28 h0/ds. 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 hjj ) ,+ixw.u dyg1x5odigh cliff, a small 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 hw,x5x d )jio 1uy.g+jdas 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 ue.nnw9fe9 om be( *;ecar races with a robot. The robot accelerates eeuof9 b*.n;nm e9 we(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 ve+xmpk:yco1+7fe1iqk rtically upward. The vertical position of the ball 0.70 s after release is the s1e+ c:k+17mpkqf xy ioame as its vertical position 4.10 s after 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?