94.01: Starting from rest, object 1 falls freely for 4.0 seconds, -8j7g -9kqd zfl azvh.and object 2 falls freely for 8.0 seconds. Compared to object 1, object 2.8qzjv7fa -k z9hl-dg falls:

  94.02: A car starts from rest and uniformly accelw .yr-bj :wpb:erates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travel during this tiw p.wyb jb-r::me?

  94.03: A ball is thrown off a high s(f lz9 +.)cctym;5* x0hm4ykbb kibicliff with no horizontal velocity. It lands 6c+5bb;t)lf ickym*mk(.0y4i x 9sh zb.0 s later with a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surf) wcsix s:9n;t*k q y+so3k/xpace of the earth is accelerating vertically upward at /tiposnwsk+ xq;cx3y 9 ):s*k $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling bo,xh+ gj*vvngnt i9hv/nn((x //apol :dy 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 downward velocitn(j +tgnx(p/, xoai/vn9 h: gh v/*vnly closest to:

  95.39: A car starts fr2hwn;. wtxo/: 1wzvv zom 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 bux kjd+prk s bw i.bv5q6;:+o7uilding strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The hv+oi+ wubj;d 5rx skbq7 .pk6:eight of the building is approximately:

  97.09: At a certain time, an oblqu2;15a sq7qzrd0s tject in free fall has velocity 4.0 m/s in the upward direction. What is the approximate velocity of the object o;sq7dqsql5 zr2t 0au1ne second later?

  98.14: How long must3p dq3896vh ovhwd yr, 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 18 m/s. If it /;b0m)8 vc hw/6*wgvheqchg mcontinues to fall, two seconds later the object wouldg8m/eh)hv6h q*; gb0wv/ wcm c be moving with a speed of

  17.02: A small object is released from rest and falls freelym;8y 6s:gogb9k* y*)vmynbl2 jx. han for 4.00 s until reaching the ground. What was theo*mg:8 yn by*hk;x26sylj9vgnb) m. a height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upwar9pw0qnbfhro3. 9x9 xzd so that it rises to a maximum height of 12.0 m above the launch pox3o 0z9pbh.x9rqnfw 9int. Ignore air resistance. When the ball reaches its maximum 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 launched straight upward so that)2 a/uns2*pt-x7 q3uejjqhbck52 myn it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how muchnkb/u*tp 3nxjyq -225 a) 27ehcmj squ 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 m/s eatjy, +i*vj2(k/dkv two seconds after itkakyve /+ ij2*jvd ,t( begins 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 tower 9gqu0nur( j 8fhr-6py with a speed of 15 m/s. Coin uq( -j0 ur6gn 9fy8prhII 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 thrown direca4 whqd; pt mgy7pos/+;z* tb)tly upwards with twice the initial speed of another, how much higher will it be; ;dhogp+q tt /a7m4*z pb)wys at its apex?

  02.30: A box falls to the ground from a delivery truck traveling at 30 m/s. Acykl g:7r41d :l; oouwfter hitting the road, it slides 45 meters to rest. How long does it take the box to come to reskl1orcydgwluo7; :4: t?

  03.29: An object is throwoz*glwo/iwa0+bed hc:av2v5h 9d5q jq8 + xx8n upwards with a velocity of 30 m/s near the surface of the earth. After two j*dgq/5bxa80v5lh deawhzw 8 9xoc2o +v:+iq seconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown verfby)z7i0ejx gr)k7w ngb 2l58tically upward with different velocit8zibg k0 gbx 7n)yl2wj 7ref5)ies (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 air resistance is negligible.

  10.25: Two point objects are launched st 36xri6 (q9law8,m l zxg.zqxhraight upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch poiniq 6 x 6(xm98z zlagwlh,qrx.3t. 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 shop3tc9we5 nc ke *.uxus us/u+4wn. After each bounce, the ball reaches one-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 bensc 94e.u53c ux+kpw/ut*seutween the second and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fall achieved 2el w;f2jkyl4 its minimum speed during flight. If that minimum speed was 15.0 m/s, w;f 2lwj ylk4e2hat was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a h ybkv;zv(+y3*:zsl gxigh vertical cliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the peb *+lygvb z;z kx3:svy(ble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of+:)hoiai3k e7 ;s cpvej*6xpd 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 balls. If the time for the ball to fall was 1.4 seconds, approximatdp+xeei3jk7sh v cp:;o)i*a6ely how tall is the parking garage?

  05.07: A snail is moving along a straight line. Its initial position is xz- .d, fi;wc:x5fxz mh0 = -5 meters and it is moving away from the origin and slowing down. In txz: .df ;-,f5zcwi mxhhis coordinate system, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-liku2bqy w sx1 pu))f) n0f9x4ci-2c zktte object is pulled downwards by gravity (down the plane of the page) but iskcw ))n9qpx-f1s cyuftt2zb0 )4u2ix 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 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 ofre(8q k 5zozp+ a tall tower. Half a second later another rock, twice as massive as thez(+r8pq5 z eok first, is dropped. Ignoring air resistance,

  06.18: A cart is initiz)ka lyn: i3yv2 bkj.8bb26ekally moving at 0.5 m/s along a track. The cart comes to rest after traveling 1 m. The experiment)3en zbkb 8lva6jiy y2.b:2kk 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?

  07.11: A cart is initiallyxr8 0v6xb5hzr moving at 0.5 m/s along a track. The cart comes to res0 b x6rhvxrz58t 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 coming to rest?

  08.03: A dog starts from rest and runs in a straight line with a constant acceldol6liy s6.o,eration ofl d.oy6lsi6, o 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 ;(hky y)mg 5)ou .fdn*l*mnumrest falls 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 is required to fall the remaining distance of 0.5h) *f(n5yd)hm *y. gukmoul;mn?

  10.38: Two objects both move and uniformly accju/1v.q pxyv1 elerate 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 the ratio of the1 .vqy1/jv xpu distance traveled in this time T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizontally with spgi5 i gv ++g28uxf*ppreed 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 8gi2*f ig++p5pgvu rx 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 remains in free fall untio6,nkd2 mo3jv, b en9el it returns to its initial launch point. Which one of the following graphs could represent the velocity of the object as a functe d3e9vkj,no6o b2,nmion of time during its flight?

  14.03: An object is dropped into frcffc60u u) s0cee fall. Through how many meters does the object fall dur 0u6cfc)0cufs ing the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surfachjsm )z /e76hvi)arm wgcl++( e in a time of 12.0 s. What was the initial speed of the bo6)7j wh+hmzle+gs/ vcmi)a r( x when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of mei8*pvs/d 7c7.60 m/s in a time of 3.00 s. Through what distance does td *7sm/piec8vhe cart move in this time?

  14.16: A toy car initially moj nex/5effvgn3g7,-e ves 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 represents the magnitude of the average velocity of the car during t eejvnf57 gn,-3x/ efghe five second motion?

  14.17: A toy car initially moves to the right at 60.0 cm/s.h0f 1 vc7u,n ji- t9tbeex-5sw Five seconds later, the car is moving at 40.0 cm/s to the left. The total displacement of the car during this time ie1is ,7w -0eh9-uc vtnf5xtbjs 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 tw2w j lc,5f7ruy2w5u constant 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. Whd(s f+t;59gjp6e,xyug7k lty/ g3nmwich one of the following choices best represents the direction of the object’s acceleration duringmu5jstl (gx/p3 +6kw, tny9d;gge7f y its flight?

  13.26: An object moving only to the right completes a 20.0 second trip in t6:.:sfn kon g3h:uhdfq62 s mcwo 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 the objecmg6ff :hc 3n2o6n:d.sqk hs:ut have during the 8.0 seconds of stage II?

  15.32: An object moving along a line completes a 20.0 second tribpqyuw c)r f2- i )r;r0tm2iw1e*wkn;p 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 seconds. What const2ik r1p 2r w)twyq-i)f; ;* brmw0ucneant 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 4:ai.dzwntz 8 is dropped from rest. A ball is launched straight downward wiwtn .4 daz8zi:th 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 the speed of the ball relative to the rock?

  16.36: On a straight road, a self-driving car races with 1 mpffsrn1g69a robot. The robot accelerat9f 1mrfn16gp ses 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 vert):qmlaz+h5 m kg0s-yln3wp5k ically upward. The 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 at a vertical position that is one-half of the maximumn50 +5wz:)l kg-ams3 qphmkly height it obtains during its flight?