94.01: Starting fromq 2-, 3hwmbuqs rest, object 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, obq2hsm-uw 3 ,bqject 2 falls:

  94.02: A car starts from repz6p.+h mlnymva du 37y1tl5* st and uniformly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travel during this tim .duz5 v7y1 +lm3aptnlymp*6 he?

  94.03: A ball is thrown off ,;6yo yxc29 +ca0,hjguyijihr 2-pna a high cliff with no horizontal velocity. It lands 6.0 s later w-gj2 n yoy0xc+ iyar2cu9, jphi,h6a;ith a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is 8vd9q-zvkk6c)pwa xsdh t(s5-;q; rkaccelerating vertically upward vvxd9)a8kd;6krqcss 5twk(; -z -hqpat $10\;m/s^2$. 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 - yf(f qwnq:g6at one instant. If it cfnq: qgyfw 6(-ontinues to fall, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and acce/,aqz64xlbdp yu r(, qlerates 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 a building strikes the gro5 otempdc2 t85und with a speed of 30 m/s. Assume air resistance canomt5 58 dctep2 be ignored. The height of the building is approximately:

  97.09: At a certain time, aik+juevl+85t 6 6xfy/en2bh gn object in free fall has velocity 4.0 m/s in the upward direction. What is the approximate 66+f2 kyhiue jnlg5+ v/8xet bvelocity of the object one second later?

  98.14: How long must a 7 -yv d.ca,mxn zkzi.+$2.5\;m/s^2$ 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 at 18 m/s.x,p (co/ zzg9 s-0qt. -koxoxn If it continues csx0,kxp-( xo.9z/tg -noqzoto fall, two seconds later the object would be moving with a speed of

  17.02: A small object is rele;;4ey fyu0ax b: lqaeu7r uu5:ased from rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground from which the object waqrfl :e40b 5u7yey; uax: au;us released?

  11.06: A ball of mass =0.100 kg is launched straight upwar2u0qxpj w5hy -au/)agidx4 m*d so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. When the baq ax-a0u*2)y m wu5pxhi4d/gjll 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 =0.100pjl:wijtn89 t414bqf kg is launched straight upward so that it rises to a maximum height of 12.0 m above the launch8 ijblp1tq 4t49jfwn: 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 kstu seh4x180seconds after it begins to slide. Approximately how far does it trav 1hs40sk8e txuel in three seconds?

  98.40: Coin I is thro:v3yesvim 6 +wv ;lc;gwn upward from the top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial sgv+cy6mv3ve ; lw; is:peed) 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 tfdi5s 6s-/vbg hrown directly upwards with twice the initial speed of another, how much higher willvb/- gd5i6 ssf it be at its apex?

  02.30: A box falls to the ground from a delivery truck traveling at 30 ma; eqot+u llxl4/b 6a(/s. After hitting the road, it slides 45 meters to rest. Hq46+bua/lt( l oxe; laow long does it take the box to come to rest?

  03.29: An object is thrown upwards with -r 2 +ro*mardp/ 50a2ekxyxkyy4g 8r0mb .zqsa velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displaceme+x/yk*sry a.0xp0y2kq zb4rro8dagm-em25rnt, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m ey vsbq,ma2m oo -/jgp.b7.7r& 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stoneg.o y smrp7j aebqo-7b.,mv/ 2. 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 identica d )prq/b8s5gdyoi7lcu.e 6c5l linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If object 2 has mass 2M, what is i6sg5u/brc l p.ei5y)7 8dqcodts maximum attained height above the launch point in terms of H ?

  04.28: A rubber ball bounces on the ground as shown. After eaxewt*7y*k2 0 xrbu* gtuv(5txl 6agpq0a ;5ttch 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 seco ty0tulkabq0g5*p g wt6*5;uxa2te rtx * (7xvnd and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fall ach4f u nm;zie8ql ri)bn2f;v/9 mieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of / li ufvmnzqe89;)nr bmi;f42launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The colli bjc1s0 x3d:o/(ujxthye (v-e sion of the pebble with the grou: 0eu /jdoc1 bjh(x(etx-vys 3nd below is seen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing aynn5a.0 lill4 bout the height of a parking garage. One student suggested that to determine the height of tnl 5lnyail. 40he 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 fall was 1.4 seconds, approximately how tall is the parking garage?

  05.07: A snail is moving along a straight linr3 xuk36d)6 hwccx+ :az8et. i bysw8pe. Its initial position is x0 = -5 meters and it is moving away from the ow 6xy+izu c.38 d:spxrch) 8 wbte3ak6rigin and slowing down. In this coordinate system, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-likeru6o7)k rszji)1 oq;g object 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 loss of energy a r;o)koi17)jz qs6gurnd that it takes negligible time.

  06.13: A rock is dropped from the top oz+tgx2:.t-t1g8lkxe j l 5 gj of)zht2f a tall tower. Half a second later another rock, twice as massive as the first, is dropped. Igk8tzt+j1 2j.oe-xx: z5g2lhgtflg) t noring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The cart comes zmmhurm/pq3k7 t6g5 , to rest after traveling 1 m. The experiment is repeated on th5rz m,up/7m6 hg3t qkme 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. xkwle+: n og3xl9xs050xko+ b The cart comes to rest after traveling 1 m. The experiment is repeated on the same t0o we 0bk lgo+kn9xxx5lsx+3 :rack, 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 arq lf zf( g7((aw x;r/ts0wcs*nd runs in a straight line with a constant accele(fqrgc t7 /f z*w;r(lax0( wssration 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 re pd, 7loc 1v2tfk78qg*.i2 p mdv5igvxsistance from a height h above the ground.pk. qovd5i 7c8fgdp g*7xl,21 ivtmv2 If the ball falls the first distance 0.5h in a time t, how much time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly acceler8y hxjx -t2d.pate to the right. At time t=0,the objects are at the same inxj2 8dh.t x-pyitial 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 distance traveled in this time T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizontally with speed 1q xmml1cj ;ul 0q04r*w0.0 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 luqj*rm xm01 ;wq0cl 4choices best represents the time of the object’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. Thev0 2vsvy;vzf q0j41;8reuzjt object remains in free fall until it returns to its initial launch point. Whiche0zyj8j1 qfrsu 2 ;vvvz v;4t0 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 manynoas ; *)f,xhijp-7 uyt0gahm544j iy meters does the object fall durinysj0u 4n io5p)jxf 7 hy;*ghm,4ata-ig the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest acros r611txx*n. 6vxmd. n2vqpecms a flat surface in a time of 12.0 s. What was the initial speedp *1xvqv 6rtxc1xm.emn6 .d2 n of the box when it started its slide?

  14.07: Starting from ree .:o9srn-p,b :0goj t u4mhmpst, a cart uniformly accelerates to a speed of 7.60 m/s iou : eot bp:9jmrmns.pgh-40,n a time of 3.00 s. Through what distance does the cart move in this time?

  14.16: A toy car initial9y+z.y4qr mwbly 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 duringy. bqz9wrym+4 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 car during the five second motion?

  14.17: A toy car initially moves to the right at 60.0 h .hlcay( -nb7cm/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 n .alb (-7yhhcfollowing 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 with velow9g/dtb .3pb ycity $v_0 = 5.00\;m/s$ 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 one of the-nw4ssyai 3b8hh5)v/hfg y(b o4j. af following choices best r4vb g3fhw-5j yybs4 . hhn)aais (o8f/epresents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes akfc3ah)5ui - a 20.0 second trip in two stages, I and II. The average speed of t3 )kaihuafc5- he 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 20.0u4n1 h 8v dvubc+7m8nm second trip with an average speed ofmv 1+8u nbm7n d4cuv8h 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. 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 smahvbs2 b0i u/j)ll 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 bai/)2 b 0vjbhsull 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 aso g2al-c crh...+ r l63daenj robot. The robot accelerates 2+l-36. rscedng hljoc.ar. aat $8.50\;m/s^2$ 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 vertijmsj/w(f)j p:vjub 7e., w jk+cally upward. The 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 fim7fj(bw.us:evj) ,k + jpw/jj rst at a vertical position that is one-half of the maximum height it obtains during its flight?