94.01: Starting from rest, objeg0:*kxcuk7 p 3t*cu vf;jk gb;ct 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1,7ku;; *ut3 c:vgxkcj* f0bkgp object 2 falls:

  94.02: A car starts fr8dko nhjh9k*2o+ yiy -om rest and uniformly accelerates to a final speed of 20.0 m/s in +i2kd*yh8 j oko9-n hya 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 gg(7 syc p o7-s) *3vaprq)pmino horizontal velocity. It lands 6.0 s later with a velocitaispypp)m(q 77rs3*g -cv) goy of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the sur1d3l7 a akk,erface of the earth is accelerating vertically upward a3kaa7 l1rd,k et $10\;m/s^2$. 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 )cpisd-vqmuq s 658c;at 27 m/s at one instant. If it continues to fall, one qm5; 8vusc6-qsicp)d second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest anb3-lkfmvx6x om: *b,n d 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 t4 5kz)0 jvtmzqhe top of a building strikes the ground with a speedv tjz z045)kqm of 30 m/s. 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/s 8atlnos2*/xb in the upward direction. What is the approximate velocity of ob*8t2 xa/lsn the object one second later?

  98.14: How long must a +kpc n) :fj5zt$2.5\;m/s^2$ 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 a0b)jpsr)9ty downward at 18 m/s. If it continues to fall, two seconds later the object would be movir 0 bpyat9j))sng with a speed of

  17.02: A small object is released from res/tiglsix* 9 o6t and falls freely for 4.00 s until reaching the ground. What was9ot xl*is/ g6i the height above the ground from which the object was released?

  11.06: A ball of mass =(zjoi1m,lf t4e2eg r j r :8dexp3t8)t0.100 kg is launched straight upward so 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),tg t4e8d8 roi ejz :rfmtp2(jx31el 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 launchq ;a)9m,fg -a0pimunjed straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much time does it taa ma mg)u,0j-f;nqp 9ike the ball to reach the maximum height from its launch?

  98.31: An object sliding ddnpn 2cjh vl;1icko:cg6s2;qo./w a 7own an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does i6hnn/ ;22qiv;o 1 o gps.:7c wlkccadjt travel in three seconds?

  98.40: Coin I is throwilrf, p8) )qoet/ rwzbj 2**enn upward from the top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial spee,b * rqjo /)wfnet*p8erl2) zid) 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 direa d4qpn:;z 2mictly upwards with twice the initial speed of another, how much; aq:2nmp4d zi higher will it be at its apex?

  02.30: A box falls to the ground from a delivery to9wlnko ;. h-(j8f9k2bqs;8xve kfc gruck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box fsk.8fx9kooh92wcl; -gke ;nj (8vbq to come to rest?

  03.29: An object is thrown upwards with a veloci 9t,nj-df-tr2h c tys,ty of 30 m/s near the surface of the earth. After two seconds what would be the direction of- h ,, ttrdsn-jyc29tf the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) a 0/wgkpn,6yxc.sfg)g, 5 q.nvm2zye wre thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates t0fesnncm2)y gw.k6wg gx/ zvq,py., 5he 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 ident0lb0z*i- zn amical linear momentum. Obj*zmb 0z l-ina0ect 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 the launch point in terms of H ?

  04.28: A rubber ball bounces on the ground as shown. After each bounce, the ballq7kwys76c awchd9n grq2*0 *b reaches oneawwn6hkq s**07g cc 7rq2dyb 9-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 bounce?

  16.21: At 1.94 s after launch, a projectilea yvky j-w(,t/gv*f 4l 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 *-ja lty/v(kwgvf 4y,of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The collision)s 4u*q(uja 4xoex jthhh++ +q of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With whaqo44h+ +h ae+(tuu)jxxhs*qj t speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the h e2h ex *;m3hnlqfmd65eight of a parking garage. One student suggested that to determine the height of the garage, theme6nmh xeh2l*5 fq;3dy 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, approximately how tall is the parking garage?

  05.07: A snail is moving rbhf8j56 gmz9along a straight line. Its initial position is x0 = -5 meters anfz89bmh5 jgr 6d it is moving away 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 object7md eyt8cb bw+b(+t1l is 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 B. Assume that in changing direction that there is no cytbl+etb1 d 78wb+m( loss of energy and that it takes negligible time.

  06.13: A rock is dropped from the top of a tall tower. Half a second later a-gxb-v o l1 n4bylf3kh0)lmr*:y.a eunother rock, twice as massive as the first, is dropped. r-myxog0u *:kbal l)f3yn 1-4.ebl vhIgnoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. Tha+rws4x ; jak8ux e;a)e cart comes to rest after traveling 1 m. The experiment isk8xaar) ; ;ewa4xj +us 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 md :..h, fngfip,/ ttiqoving at 0.5 m/s along a track. The cart comes to rest afi,.p:hqitn gt, d/ .ffter 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)c +yazkz 8uxem7q*;h line with a constant acceleratioq+kxem *8z) 7z; auhcyn 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 without air resis.-cvte *qr7nu tance from a height h above the ground. If the ball falls the first distance 0.5h in a timvnu* c- r.q7tee t, how much time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerate to the right m7xqu4rq3he*jsdpw-6s 5b m8 . At time t=0,the objects are at the same initial position. Object 1 has initial spem -w uxb356hs d7sp*e8qj4q mred 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 1f3xiv2-hw 9olslmz1 6:,mua7y2nruv0.0 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 represents the time of the object’s flight to the nmmr6 zf:x32ulhs9ov 72yi w-1l, uav ground? Ignore air resistance.

  13.10: An object is throw u)umr9 )g aj6qcjn 62hrh:dvx c:jb02n straight upward. The object remains 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 a function of time during its flight c:gx:q9d 2m c2jh6juba6r0r nuh )jv)?

  14.03: An object is dropped into free fall. Throgc*,k(8,+i nzkp jlwough how many meters does the object fall dk(i,wk p * 8+czonlgj,uring the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7. wglv/+k 5)d0xr mi0--,ya llmq1gikj50 m to rest across a flat surface in a time of 12.0 s. What was the initial speed of the box when it started its sli+q, gm l xalkidk)jg/1wlr0yvim-05- de?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 7.60 m 6o-s:sb cve rchc)k,-/s in a time of 3.00 s. Through what distance does the cart move in tk:)bcshsr-c,- ec6vohis time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Fiph; pc3 pxd6t r)/epk1ve 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 be1;/hd p3e6)rcpt px kpst 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. Fivyjv-t3:23cka 5 ctw-wkdf(y ce 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 tf35(k2-vwytck3a cj :- ctyd whe 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 acceleration starting witeglh wt yt7ftp; k)h3p+*gv0u w4r4o +h 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. Which orzltxo.;8o4- d 1 kks/4 6sraofml 0hvne of the follo. r/tao4m1 okx hols-rs8dlzfv6;k 4 0wing choices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving /3kak.nzrk b5only to 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 the object have during the 8.0 se5k k3b r.nkaz/conds of stage II?

  15.32: An object moving along a linepxbz /0 w2f96v,ztpwx c;zcx.pu: 8ck completes a 20.0 second trip with an average speed of 10.0 m/s in two stk,xzzw2xw c:.b p/ctvucf; 90 pz6x p8ages. 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 small rofw2ebiafulp j 2gg1p)r gn*;1:4 g*3, xbtaqcck 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 initig ;up eg lpcqn*11g4f322wabtif) ,ga*x: rjbally dropped rock, what is the speed of the ball relative to the rock?

  16.36: On a straight rb5gs,h(ck imcm 9hz-z5e.5 otoad, a self-driving car races with a robot. The robot accelerates at 5cio5(m95cgs. th m kbez -zh,$8.50\;m/s^2$ 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 launch/puwoed1k*k) du4 /zbed vertically upward. The vertical position of the ball 0.70 s after release is the same as its vertical position 4.10 s after iko/k*dzw/ ud4u 1p )bets 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?