94.01: Starting from rest, object 1 falls freely for 4.0 seconds, and object 2 4 xm8w, czkj0q pca4);vc6wkdfalls freely for 8.0 seconds. Compared to object 1, mcx8 c,pzkkwq c;wd 4j4a)60vobject 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a finj4sehq3 w4 1qt vq)8reh,dwi7 al speed of 20.0 m/s in a time of 15.0 s. How far dhj, 738 4qwh4e 1istq edwv)rqoes the car travel during this time?

  94.03: A ball is thro7 , o1ls1,zu mcmzm0rcwn off a high cliff with no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial velocity ofcm,sro,lzz 0 71mc mu1 the ball?

  95.27: A rocket near the surface of the earth is acceljcc ma.ty b 08+r;ddi9erating vertically upward j i;dyrd+ctm8b0ca .9at $10m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling yjcb2 3 6pyqlzx.ynnv78 /kd(body 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 velocity closeq78pnnlvk 36cy j 2byyx.(dz/st to:

  95.39: A car starts fromq 9zoh;cq ej1sui pe1ra-d.4 1 rest and accelerates at $0.80m/s^2$ 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 building str8lq/8n.ac hz 4bcg+b dikes the ground with a speed of 30 m/s. Assume air resistance can 8d4 8q cabg./n+bl czhbe 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 in the ujnk* :k427j*sj twc stpward direction. Whjjt kn jsstk7:wc4 2**at is the approximate velocity of the object one second later?

  98.14: How long mustoftt chg1;( /n a $2.5m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling objec 3/pfs65pn/yz +cri.m a+ckszt is found to be moving downward at 18 m/s. If it continues to fall, two seconds later the obmzpnc6s 5ps fir+/3 a/+.zykc ject would be moving with a speed of

  17.02: A small objec/ka( u1wkm04 ihj+qq tt is released from rest and falls freely for 4.00 s until reaching the ground. What was the height above/+q ka(jq4ti m01kwhu the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so that it risew*;s jre 9+vdts 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 choices best represents ;9dvsj ret*w+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 thac1m xpx6 h3)sgt it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much time does it take the ball to reach the maximum hex6g1hs pcx)m 3ight from its launch?

  98.31: An object sliding d38ycy 0m z8xjxbaal jh-q1w:(cf9ou 3 own an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does it travelfc-qy8zj x3a:1b l3(cxw 0o 8u9j mahy in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower with a sb 3)4 *tupqp 44,b adx9nc8 pek;wpsocpeed of 15 m/s. Coin II is dp,wpupacb 8cdb43 ;*ks)9to qx 4n4epropped (zero initial speed) from the top of the tower 2.0 s later. Assume g is $10m/s^2$. How far below the top of the tower does coin I pass coin II?

  02.04: If a ball is thronv x;,k0*hnc; vdn zy:t /eeu0je5ps,wn directly upwards with twice the initial speed of another, how much higher will it : sxvvk jcne, ;p/d* n;00yhez ,ntu5ebe at its apex?

  02.30: A box falls to the ground fr0/kpgtpqe9i t:hk)8c ezn*1fom a delivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. Howk p gk8n/*ec9t)zif1 ph0etq: long does it take the box to come to rest?

  03.29: An object is thrown upwards with a velocitvhrp eh7f h5,7y of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, velocity an5hfh 7 hpev,r7d acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vertically jp -39scw:b np/,jvub-ahx h.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 eacpup9.hnc -hs-, xwj:3 j/vbabh stone. Assume air resistance is negligible.

  10.25: Two point object* cp: 0us(w0csxht yld(j *m+js are launched straight upward with identical linear momentum. Object 1 has mass M and reaches a 0wlt* *s0hpj+ sxmc(uyd: cj(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. Aftervhzrp-( q a*llu:e 6r. 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 t p-(lqv6 rhz*. :aerulhird bounce?

  16.21: At 1.94 s after lauftk g+6q/5jm7r2gkvl3eues3b ( p.djwx6 ix 4nch, a projectile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 mek +df4 3x2.6mx/ p6 eligjwsbjtg5ru(v3k7 q/s, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropp5tczi l .fu4(o-x v5mved from a high vertical cliff. The collision of the pebble with the ground below is seen 1.50 seconds after z- v4t5ioxf (l.c5um vthe pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about tck v e2aqm*s c.r-)1i fjn.;kphe height of a parking garage. One student suggested that to determine the height of the garage, they sijv* mif -ncqke )cs2ka;rp.1.mply 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 along a straight bz,)7ak7bobs wc- 2b oline. Its initial position is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system, the signs of the initial positio,b)oaw cbb2 ko-bsz7 7n, initial velocity and acceleration, respectively, are

  04.38: A small point-like objlxy6rr/rx7sn s tf,8)h0 k4z oect 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 pas6kxto)l xrryn7f8h4/ s,z0rths 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 f5qjk rf; ko*r1rom the top of a tall tower. Half a second later another rock, twice as massive as the first, is dropped. Ignoring air resi*o f q15rkk;rjstance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The u- r( 6k6z9pswk-vbs5 w s9rcwcart 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/-prbs96wk s6vws (r 5zwu9ck-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. ik wg*er26;zu2l 5z *nsv5fktThe 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 ca;vzs ug wzt ifr52k *5*l26knert travel before coming to rest?

  08.03: A dog starts from rest and runs in a 28go. 10jkg-5jgon s zxhn (igstraight line with a constant accelerationi oj k 0(gggno j5x1zgh8s-.2n of 2$.5m/s^2$. How much time does it take for the dog to run a distance of $10m$?

  10.29: A ball initially at rest falls without air resistance from a height h dj l8uo;k;gi* above the ground. If the ;*ju dgkli;8 oball falls the first distance 0.5h in a time t, how much time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly acceljz u. d5w3 3y)asrled7erate 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 Ow.l37d53a zs)d uryjebject 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 heif(av5x;pt: crf1+b bfght H above the ground. The object reaches the ground with a : bc ;(+vr1bftfafx5 pspeed 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 straighxe.5k 6px 0tk .jsmyg5t 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 x 6.xk05esjtm5 ygkp.of the object as a function of time during its flight?

  14.03: An object is dropped into free fall. Through how many meters does tgbsu (5 hv,5idhe object fall during the first 3.00 seconds of flighhu bg(5, dsvi5t?

  15.02: A box uniformly slides 7.50 m to rest acrosh auqr;2w :up7s a flat surface in a time of 12.0 s. What was the initial speed of the box when it started i quu7:a; hp2rwts slide?

  14.07: Starting from rest, a cart unifaqx m(27r 3+lw1lbtq uormly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does t2r1 bqat(w3 qxm+ul7 lhe cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 xs6o+d ( 2)ygjqhp*xu 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 ijpxdg2yq+ xo s(h 6u*)s 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 the five second motion?

  14.17: A toy car initially moves to tecmtb08oe2+28e sd gghe 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 e2bgm t e08secd2o8+gduring 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 acceleration of the car during the five second motion?

  14.33: An object moves wit4lh /-wv ffar+ohtlwm ;/w7h,h constant acceleration starting with velocity $v_0=5.00m/s$ and ending with a velocity of $v=-1.00m/s$ in a time of 3.00 s. For this motion, what is the average speed associated with the object?

  15.05: An object initiallc1da8j4axv9roj b 1o /y is moving upward while in free fall. Which one of the following choices best represents the direction o8jro da1vj c4x1/oa b9f the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 second trip in t xc437e gax 1a0zpz2wuwo stages, I and II. The average speed of thaz3cxz2 g a 4wu10p7exe 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 20.0 second trip with an ady ,t1 of.;wlaverage speed of 10.0 m/s in two stages. During stage 1, the object moves with a constant velocity of 1dayfwo,lt ;. 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 rock is dropped from rest. A ball1d.vqn6zswv)qf q5a 2jn 0bp6 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 rock, what is the speed of the ball rs n0 aqw1 z56vfp)q.62bvjd qnelative to the rock?

  16.36: On a straight ro6fw9.p o /qifq2rj- vsgkw (dyls/h)5ad, a self-driving car races with a robot. The robot accelerd)kfs/ / .9yfpviw(lsgr - hqoq56w j2ates at $8.50m/s^2$ until reaching its maximum constant speed of 15.0 m/s. The car accelerates at $5.60m/s^2$ 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 v( m0nkf 5y gx0ex0w(uoertically upward. The vertical position of the ball 0.70 s after release is the same af e0y(wugkxo 0mn5( 0xs 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 during its flight?