94.01: Starting from rest, object 1 falls freely for 42q s8r8nywt5i.0 seconds, and object 2 fally2 5r8i8snqwt s freely for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final speed ov ,g,x3qwlw/ssol* .54hrcq lf 20.0 m/s in a time of 15.0 s. How far does thwl5 ,/*lo sh r qg.s,wqv3x4lce car travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal velo,:6 vsek6rws7 ihiz5icity. It lands 6.0 s later with a velocity of 40 m/s. What was the initia7si,6e kiws6r 5h vz:il velocity of the ball?

  95.27: A rocket near the suw4kdxiiqmuo-d-b/yo036 8n6 2 lik tyrface of the earth is accelerating vertically upward oiy0-ol 6 yqt3dbwux d2ik /4n-k8 i6mat $10\;m/s^2$. 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 dowx/fw(cp:bie pjphh ,5;g-k ; qa24gaynwards at 27 m/s at one instant. If it continues to fall, one second later tkc(/ i b pgay ;w4x2a-h:;qe5fpj ,hpghe object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and accelerat/azzbwo 6** ym-0li mles 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 o: -oumhdt//w u-ze*;n oqi gk)f a building strikes the ground with a speed of 30 m/sdmk/w ;/ueu*zt- o q:gi)o-hn. Assume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain timemq k,c8d2m(9g ,y r0xt- gkdfmju.r+ y, an object in free fall has velocity 4.0 m/s in the upward direction. What is the approximate velocity of dx9rguyg8+0m m k2.mq- ,k,y t(crdfjthe object one second later?

  98.14: How long mustdj0uau: dr hfg8m17 1;ixud3d 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 ac6h).8avkmd :uh9tviq cs,:1s,juwht 18 m/s. If it continues to fall,v cvu) a,shi.hc6tq:w:jh,u8ds91 k m two seconds later the object would be moving with a speed of

  17.02: A small object is is v2dd9bc +:-g dbv2xreleased from rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground from which the-bv+2i xg:2 9dvdc bsd object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so that it rise-+ybiftjnfl96 76;; e fitxb fs to a maximum height of 12.0 m above the launch po6ybxi; t lfnj 9e6 ;7fb-+ffitint. 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 it rises tov* z(a79 :of w)w,wzok mmuh)j a maximum heig m)w9vmkf,za*:uz)7( ojhw ow ht 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 speed 0.40 m/s two secnij yu.e,7lf;m x)za-.l6 wz bonds after it begins to slide. Approximately how far di ml);b6a.ynfz7-xjz.l,we uoes it travel in three seconds?

  98.40: Coin I is thrown upward from the top of axmtm91o uz10n 100-m tower with a speed of 15 m/s. Coin II is dropped (znom9x0 1u1mtzero 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 directly upwards with tho+v 0d-bfio1 tk5l;i n ici+7wice the initial speed of another, how much higher will it be at iti +ni k;b+7ioo 1t v-0hilcfd5s apex?

  02.30: A box falls to the ground from vcxk7 f1oe s1(kp a0.xa delivery truck traveling at 30 m/s. After xk efkcosx1.01v7ap ( hitting the road, it slides 45 meters to rest. How long does it take the box to come to rest?

  03.29: An object is thrown upwardsqn+isfk(b+8 .an on*e with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the n ka(q8+nino.efs +b* displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) ar3-8hryxic x9me 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 sty xrixh8 3-cm9one. Assume air resistance is negligible.

  10.25: Two point objects are launched straigwsglt*8n; g5ezd x:l 9ht upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above t g9gw*e l5ls;8:d txnzhe 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. After each bokyu :9qcvs7sdsld40 ,cc j0f*unce, 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,c079:dv*fcku,c 0 sql sds4j y what would be the time between the second and third bounce?

  16.21: At 1.94 s after launc j ccvv;nlz0;di/*-qyh, a projectile in free fall achieved its minimum speed during flight. If that mini jcnv/0 ;cq-y *dliv;zmum speed was 15.0 m/s, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is d(o ;tp7y37if aix8 wcqropped from a high 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 pebblei7; pqft(7c8oa i w3xy hit the ground? Ignore air resistance.

  06.03: Three students were arguing about lcgyc-0zw 7q3u/yo c8 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 balls. If the time for the ball to falwz c7ucolgyc/803q y -l was 1.4 seconds, approximately how tall is the parking garage?

  05.07: A snail is moving along a straight line.uiy79ab th4s9 Its initial position is x0 = -5 meters and it is moving away from the origin and slowing down. In u bsih9 97a4tythis coordinate system, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled downwards by gravity (dowy:y -oq* kucx.n the plane of the page) butq- uyxc.:oy*k 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 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 t:3yc-eon bzv( all tower. Half a second later another rock, twice as massive as the first, is droppedv- ce :yonz3b(. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a fme6 -gseu;r8 5vbub pm b9;areq69f,track. The cart comes to rest after traveling 1 m. The experi;rvm,q9bb e;r pu6m9-es5e6a8b ffg ument 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 initially moving at 0.5 m/s along 7;l9n(cpn:t mpu 4x;blt*glna 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 dn;;m7tl9xtun: n l*p(4gc bploes the cart travel before coming to rest?

  08.03: A dog starts from rest anddy 6 zo3-l*abaacrnk54b)te+ runs in a straight line with a constant acceler*t5y3+o renk bz a) 4ac-6aldbation 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 rez9/- i)dpxr4yred6m lexj-3 g st 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 relx-i-gd/ ejpd)4 zrxmy39r e6quired to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerata8wz;nj n4xq6m1sqv :e 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 the distancesq6q nw;1: vn8zmxa4j traveled in this time T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizontally w oq s6jc lc(;qvn8)s(isoy0u7 ith speed 10.0 m/s from a height H above the8 q7( oyu c;l ij)0(oqcs6snsv 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 resistance.

  13.10: An object is thrown straight upward. The object remasynh(6dw. x*- p l-zbjins in free fall until it returns to its initial launch po syxzj(nw-p *lb.d6h-int. 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. Throph0 q4)avtq (uz81yvs ugh how many meters does the object fall during the first 3.00 seconds of f8(hvs vu4)qy0aq tzp1light?

  15.02: A box uniformly slides 7.50 m t fb4r2u+oeh9 n(slv0co rest across a flat surface in a time of 12 u40r2vnhsbcfe9o(l+.0 s. What was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a s/ mdsn 3i r s)9nxc/2i/zo)pixpeed of 7.60 m/s in a time of 3.00 s. Tii/)/si2cr/xn) p9 o3z dsm xnhrough what distance does the cart move in this time?

  14.16: A toy car ini veyn f1bu78+mtially 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 displacement of the car during this time is 10.0 cm to the left of where it started. Which one of the following ch8uv1n m7eyf+b oices 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 cm/s. Five seconds lufdqukj5.d -3 ater, 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 duk5j.f u- 3qdstarted. 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 coy5ld-e x18 ccxnstant 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. Wvda dlcid75 +6hich one of the following choices best represents the direction of the object’s acceleration during its a76di l dcd+5vflight?

  13.26: An object moving only to the right completes a 20k cozyfmb muw40u +: td+ww(,.kr92e o.0 second trip in two stages, I and II. The average speed of the entk2 udymowof., r+w w+(9c0tu: ezbmk4ire 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 object have during the 8.0 seconds of stage II?

  15.32: An object moving along a line complb)drl/ bw/rj235p5gr3ceu/q z rlk)hetes a 20.0 second trip with an average speed of 10.0 m/s in r r ul)/wk3el//b 5gpbrz)52d rq3chjtwo 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/ m0mp i ommfc(+;qy5vaok7:m 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 has fallen 28.0;mqmf0 am75:y(+k /pcomoimv 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 selfkx v.8s usa,v0-driving car races with a robot. The robot accelerates at ssvav0 u,k.8x$8.50\;m/s^2$ 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 oj8 o kxe-2)q-xy+nq wkf 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 th8kwykoxnqj-x+e -)q2 at is one-half of the maximum height it obtains during its flight?