94.01: Starting from rest, object 1 falls freelyuo hc3a)3)rzz for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared trczaoh)3 uz) 3o object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a fobsv casm arjuwkxiybe/h3 *-gqi(2d(2 43 2(inal speed of 20.0 m/s in a time of 15.0 s. How far does the car tribs/ wmc3uk(3a q2r4h-2isye(* av bdg2o(x javel during this time?

  94.03: A ball is throwzf ia;hl qqhrn qg-f65/;b)7sn off a high cliff with no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What bs/gzah 6n;r7fq li )h5 qfq;-was the initial velocity of the ball?

  95.27: A rocket near the surface of +(j4g.*;: +.sxswnog/uc)n t d wpdhnu.wgnvthe earth is accelerating vertically upward +on/(.wg *xd:n)+t4sjv gw;. usncgpdu.hwnat $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is found .yh j v0)onb2 xy3yn0y-u*sac 5fr;tvto be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be moving with oub) -ntjv3csy*h5 yr yyn.xv0a0;f2a downward velocity closest to:

  95.39: A car starts fr( im xpac+6j4uom 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 l*e4w 7a zigh;6s--/h su iciga building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The heighlz -u agghwh-i74es*is6;/ cit of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/s in the up9lazm:me6 q3qb*gf q k3r.si1ward direction. What is the approximate velocity of the objec aei fmbqg3q16:* 39m.zrqs klt one second later?

  98.14: How long must :k2a5j*l signrd *iq 70: oif oa5/ywua $2.5\;m/s^2$ 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 mc. 72rzoxm m, zjn+h1to be moving downward at 18 m/s. If it continues to fall, tjrm2 c+ z1z.mnh7oxm,wo seconds later the object would be moving with a speed of

  17.02: A small object nq tdwtp-rdc,0 ch.p) ;t)d5ois released from rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground from which the object was releasedp;.qrpto5d-))d0c , nd whtct?

  11.06: A ball of mass =0.100 kg is lk/mza:8kn8 zp 3)fiq* m 2kg dmcx.op;aunched straight upward so that it rises to a maximum height )2;ck :g kqzmo3 d8n/*a.kpmfp zx m8iof 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 force acting on the ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 kg is lauufj4lasu: - izx/3.f/cqjk /vnched straight upward so that it rises to a maximum height of 12.0 m abovfj 4isx // fl:vj zuqa3/.u-cke 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 73ah j)+ijj p;o6vdyl seconds after it begins to slide. Approximatel)j3ji+ljov ;hy7 6p day how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top 7c6 w5xg.q*qtb6 aw4lsl6q z5d wjfz,of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s*twqsbdjlgw x646z,5lz.5awc 7qf6q 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 upvst ss) 09qcwn uft:60wards with twice the initial speed of another, how muc0)0st:ct snwqvfs69 uh higher will it be at its apex?

  02.30: A box falls to the ground from a delivery trtb7ff q6q1jgj41evn )uck traveling at 30 m/s. After hitting the road, it slides 45 meters to r jt 71)gvf6qnej4qfb1 est. How long does it take the box to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/s near thm:gu*v/t4(e+e -; vkn r ybelje surface of the earth. After two seconds what would be the direction of the displacement, veloc4+tym *erveb/g-;evuk (:jnlity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are throws6cex 86s0o fqn 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 air resistance is nq 068xfoc es6segligible.

  10.25: Two point objects are launched straight upward with identical lineari-8c -8 g/fdpb(1ogl oqj kr(x 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 hebx8/1jrgpigqflo 8-k( od -c(ight above the launch point in terms of H ?

  04.28: A rubber ball yex t)8(* *eda:v-jxq3kwqgobounces on the ground as shown. 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 v*g*q :edxxq o ke8(jw-a )3ytwould be the time between the second and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fall achieved its minim v2 641 tiqdgsnqn6r.hum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’6 1h isv rn.d26tnqq4gs initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical 2ybnm7katu nml/q6: bv 8( )sncliff. The collision of the pebble with the ground below is seen 1.50 seconds aftermlybt: ( nq6nn78)/s avubm2 k the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were fhz/j)xo sj2i;l szbj )7rtgh* 9cym*n6qx 2 3arguing about 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 thc)s/jjt*gs9b*l o xx2 ;ifrz q7h )zn6jm23hy e 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 line. Its initial position is xj ;ny( 3bdw2ib0 = -5 meters and it is moving away from the origin and y( jbniw3 db;2slowing down. In this 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 (down the oce*u9k 2* r+,z-ffoqhkh0v9ymuc s 2 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 B. Assume that in changing direction that there is no loss of energy and9rfs 2* c +uvheoy2-09mukz*h okqc f, that it takes negligible time.

  06.13: A rock is dropped from the top of a tall towwg2koi 8ql2p 3k6 1kshr-ccc1er. Half a second later another rock, twice kh igc -3c28wko 2klscrq16p1as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially mw kxz+p/+smk1.ns)gt oving 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 comink xs)1 kgpt./sm+zw+n g to rest?

  07.11: A cart is initially moving at 0.5 m/s along a trah2 *4byagj gyd*t/)mt ck. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but no)4bd t*g*y am2tg yhj/w 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 ic(ez*5 0o mmlwn a straight line with a constant acceleratioo(*lwm5mz e c0n 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 falt-yt mm ydfd5 a93m/6,kdvh9t ls without air resistance from a height h above the ground. If the ball falls the first distance 0.5hya5t fm,/ t mtdd y-k3mv9d6h9 in a time t, how much time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniz4-th v)7fdmj9yac(dk -g,myformly accelerate to the right. At time t=0,the objects are at the same initial position. Obj(yzm-y-mkhvgt ,d 9j) caf 74dect 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 horizontally with speed 10.0 m/s from a height H abocnd+t vzrs2le 3y4jda5c 9 a5*ve the ground. Td5n4 zvc3+yjac* 5ra 2sletd9he 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 remains in free -f+b 2h:jghvg;z +pyj fall until it returns to its initial launv:++j-2hbypg fhz g;jch 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. e81 g -hjp)/ks s3pyiqThrough how many meters does the object fall during the firstg1 )js-spkq8i/hpe y3 3.00 seconds of flight?

  15.02: A box uniformly slides 6z,r)df 4dd jcng )t.txacs+m f5sp8. 7.50 m to rest across a flat surface in a time of 12.0 s.j)5 s radx8m) g ft+ f,.d4p.6zsdcntc What was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly 5tbc*lw+v ok -h 3+zzkaccelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does tk-lk h*zv++z bo3wt5che cart move in this time?

  14.16: A toy car initially m(c map-- mzpony.* n:woves 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 :( a pywpmmcno*-z .-nchoices best represents the magnitude of the average velocity of the car during the five second motion?

  14.17: A toy car initially movn1pwvacc 5n9(x:b2 k mes 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:1kb9(vcn xpw2c5 nma 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 acceleration st ke3h ev57wz:o ose-+yarting 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 fa7ysn t9utcw mtny.e i9)8 o-n:ll. Which one of the following choices best reuwn i.c )enmn9ttt o-89s yy:7presents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to 5 3*bq 4mcg1ute2q*fs7 utj sbthe 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 the obc utq1sut7bj35**2ef4 s bmgq ject have during the 8.0 seconds of stage II?

  15.32: An object moving along a line completes a 20.0 second trip with m(oh:unhj y:zad4 m,8an 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. Wn ju::ya(m d, hm4zoh8hat 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 c) v4x2u ,u5wp ffcl1v/xab7gfliff, 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 has fallen 28.0 m further than the initially dropped rou xv4)ug7/lc1 wvp25f bx ffa,ck, what is the speed of the ball relative to the rock?

  16.36: On a straight road, a self-driving car races with a robot. ri,b-zo -svk3 The robot accelerates atrsbzoi- k-3v, $8.50\;m/s^2$ 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. T40jeb 9 sn1tyohe 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 maximum height it obtains dub1e 0n9 tsj4oyring its flight?