94.01: Starting from rest, object 1 falls freely for 4.0 secontw :)1y cko5t *xus mjxb9d-o3ds, and object 2 falls freely for 8.0 seconds. Compared to object 1, objec- bokj*oxyd)t x39c: wtum s51t 2 falls:

  94.02: A car starts from rest and s6; s5(fkasoxuniformly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far df(5s as 6kso;xoes the car travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocit m *88 wbjku5wu; -6+vulfqjk k8e7gyfy. It lands 6.0 s laterukm;yejqklv8jg 76kb8 8f-*wu+5fwu with a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near nm1,*3u2tsdb)ba p hythe surface of the earth is accelerating vertically upward at)b,hp 3ysundm* 2ba1 t $10\;m/s^2$. 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 at 27 m/s at onn6k9hab cgyu1h;8c3 q e instant. If it continues to fall, one second later the object would be moving with a downward velocity closest akg cb918q h 6yhnu3c;to:

  95.39: A car starts from resot;g q:sre 4x)t 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 dropn ci)8f8nn op:a*ql7b ped from the top of a building strikes the ground with a speed of 30 m/s88qp:n*f)na7i ln cob. Assume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/skvjkee6eyvb9vp p ky 173al9. xc2 z:7 in the upward direction. What is the approximate velocity of the objecvj7e9a 2ly3yeekpbpv1kcx7z6 v 9k.:t one second later?

  98.14: How long must v9k bm 1i)ijhj e(vy9:ly5czhs2+) rca $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling object is h,0q6vxjr8ra found to be moving downward at 18 m/s. If it continuej0r, x68 rvhqas to fall, two seconds later the 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 reiiyfua5e6( z8-tazp)aching the ground. What was the height above the ground from whichae (iyfzu8-ap)zt65i the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward tawsoc **tr0hdwf+3 tq o2ov4sh8.8wso that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. When the ball0f*o qw2 to4rov3w.8h c+8 tdsaws*th 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 st/cxo:1+mtqt. x psjrro)iy7m4 rd /; lraight upward so that it rises to a maximum height xj;qi/4/.ropmlr sy1t t+rxdm)c7:oof 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 inciy( nn 57gfrg 5wkf);iqfaih/n3. rl8lined plane has speed 0.40 m/s two seconds after it begins trr( )hiikgl y7/8 5 3qnf;.ffgiw5na no 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 with a speed of 1pnb5w5i pzxyi)y, 4 6q,uzw(u l9 gd)w5 m/s. Coin II is drlgdpp5,zq wb ,wu6w)y( i 5uz)4y9ixnopped (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 directly upwards with twice the ing6pi . nxpcdqpkjhm/- h9l3* ,itial speed of another, how much higher will it be at its alkh-96p 3ip.qpx g ,/cnjdmh *pex?

  02.30: A box falls to the ground fr: +gijjy;g tsmz14(o eom a delivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. + e 1:z;jojgmig(yts 4How long does it take the box to come to rest?

  03.29: An object is thrown upwards with a velo3a-a7j- xpmiz6j k 7pt 3+-gu 7axzspccity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, velocityap7 sjz ax p7-+zma-3pkjtu3-6x7 gic and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vertica;pe( ng6 kln(xlly upward with different velocities (1v, 2v& 3v rekl6 n p(n;gx(espectively). 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 upwar)3ziischmdlz. ,1mke7od , y6d with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the laui, .z 7m,coizmk3h)ey s l61ddnch 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. A)nm4 6v 2i:nadaa6vy wfter 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 between the second and third boyiv dva6mn426awn):a unce?

  16.21: At 1.94 s after launch, a projectile in free fall achievax46 qxd, ;mw-(dw c /-):syute ecipced its minimum speed during x)qxc,-(; /pedu6m:4cwe s-w tacy diflight. If that minimum 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 062 eh4jw0zws 8hyriy vertical cliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what wh6y02riwzj04e8s yhspeed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the he l,zrn1*lvt9 ,qso mf2i+t5s tight of a parking garage. One student suggested that to determine the height of the garage, they simply had to drop tennis balls from thtvm+toqn9,s,s flzr *i25t 1 le 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 moving alonbw4f*o952cp: fp+kza ;u rp xzg a straight line. Its initial position is x0 = -5 meters and it is moving awk xu5a9*4+;r2czz o:ppp bffway from 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 is pulled downwardsqu.(q jnvc 7-e5q5nlt by gravity (down the plane of the page) but is constrained to exactly follow each of the frictionless pathways quq (v57n qcl -ejnt.5shown. 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 rlze4hpd3qvrvozw:f3:)*-5 b m ons8 a second later another rock, twice as massive as the first, is droow:ez vvq3 *-rrmslf5h4: p)b3 z8dnopped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. Thhw6)9 c1zlpu0iitbj; dbx*+v e cart comes to rest after traveling 1 m)1ij vh0 d6u b zlx+tpbc*;w9i. 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?

  07.11: A cart is initially moving at 0.5 m/s along a track. The cart comes / 9lxxm8nj* kvvs ic2/b4e 5dnto rest after traveling 1 m. The experiment is repeated oc ld9e2jmi n nvk/*58vsxx4/ bn 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 srwrew9vl)ltm td:)q 7 .eg45etraight line with a constant accelerete9 qtgv4mwl5d )w:r7e l)r.ation 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 fallsjw4vl-bd5 .qmqaw5g vec k*hv s +*2;n 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 0.5*qe52g4w- n5jml ;awq .s k bcvvdv*+hh?

  10.38: Two objects botha4jhe go(v,/ii8eg. e move and uniformly accelerate 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 objece8jgo4.g,i/veah e(i ts 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 horizo(4mr z3y 2jmhontally with speed 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 of the following choices best reprr 2ozh3m4 mjy(esents 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 uhb h eq0tz+ro0(lm2 )xntil it returns to its initilz2hohqt)rb+x00( em al launch 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. Through how many mec7ia6wd1;(ym6 pqk o mters does the object fall during the first 3.00 seckwym7q6d poia;6 (c1monds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a p, ;cx1jjz*z k. uvm6uflat surface in a time of 12.0 s. What was the initial speed oxpj 1zkvz.*u6c,; jmuf the box when it started its slide?

  14.07: Starting from rest, a cart uni/; g2v +f a.,lhymkgrbformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through .h+ggb2f klm ,vay /r;what distance does the cart move in this time?

  14.16: A toy car initially s5ku -g1ck*ig 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 choices best represents the magnitude of the average velocity of the cac gu-s*kk1i5g r during the five second motion?

  14.17: A toy car initially moves to the right at 60.0 cm/s. Five secon1le 6e 63tuv4v+utj n15hkwzyds 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 a4evwev5 lj yu6k 1+ tzn36tuh1verage acceleration of the car during the five second motion?

  14.33: An object moves with constant ah6vcy.l :o b0 )vfdnn7cceleration 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 hoe7 sld)u bkdn//,-s upward while in free fall. Which one of the following heso nlb)7/sd/kd u-,choices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a wj da)i rl9qf+exj 0,)20.0 second trip in two stai q+x)e ,rfaj)j9wd l0ges, 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 object have during the 8.0 seconds of stage II?

  15.32: An object moving along a line completes a 20.bl 5t09f/kv e/tmx-c l0 second trip with an average speed of 10.0 m/s in two stages. During stage 1, the object moves with a constant velocityxmflbv0 klt/ 5-te c/9 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 -xmpa0hl ds;;, a small rock is dropped from rest. A ball is launched straix; m0dlap-sh ;ght 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 the speed of the ball relative to the rock?

  16.36: On a straight road, a self-driving car races with a robobz8.usf w;njn l. w8mk; *tu n/s9ly2nt. The robot accelerates atm2y;t z9wnn.u;lnufs n8* .jb/ksl w8 $8.50\;m/s^2$ 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. The4mvz:x0;i x0lxtj:k 1gvl +ec 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-ha+z x0l01e4mgkvx:c xivj;l:t lf of the maximum height it obtains during its flight?