94.01: Starting from rest, object 1 falls freely for 4.0 seconds, and o6l:o -3rz0aw3 fpk5t jm*hls.uds8 bsbject 2 falls freely for 8.0 seconds.btd zuas8: l*o-p h.63sk0 j5lfsm3rw Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a finn4wsy)xadwpi wko d(j;0d39 8al speed of 20.0 m/s swwd;o(nyi93pw08 k jx)4dadin a time of 15.0 s. How far does the car travel during this time?

  94.03: A ball is throw *5cxu / 2i5 stowm2blf7nsf7apnj//xn 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 of th j7ix n xwsp/5na7m/l *tf5/osfu22bce ball?

  95.27: A rocket near the surface of thejha zla* d+(c2 earth is accelerating vertically upward ad*(ja +hc alz2t $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling 9 k t7 pe+oqgd66ceze)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 ec 7 dpg e6oz)t96+ekqwith a downward velocity closest to:

  95.39: A car starts from rest and accelek3cg bu4) )ej5jc ylwe, v)gq;rates 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 strikgcc w0ejsi. * (ixwe*i:w e6b9es the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of c*0*xe wibej.( 9ewisi6g: wcthe building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/s ixluu1aipj0(z -p 8,0nqz x xi*n the upward direction. What is the approximate velocity of the objec u *np-zzl0,i01x xiqxu (j8apt one second later?

  98.14: How long must a xgeb ci,5,)f d 8zv:c; fqum:y$2.5\;m/s^2$ 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 atl tvee zmp31,1x/s- dq 18 m/s. If it continues to fall, two sm/z1 3qp-1edvx l se,teconds later the object would be moving with a speed of

  17.02: A small object) h r.qttc,h;t is released from rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground from which the ob.)ct, qht; rhtject was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so that it r5d -jbeouknenu-sd e 4oy0b ,;2y28inises 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 the magnitude of the nety 5 ou4nesudbjb 0 e2d-;2eio-n 8y,kn 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 s mix-zyq. kne agr6-d4s15a,c o that it rises to a maximum height of 12.0 m above the launch psc-dz 1eyri,kgm5aa 6 n .x4q-oint. 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 dow*nvzmh)9y wj8 n an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does it travel *h)znwj m9v8y in three seconds?

  98.40: Coin I is thrown upward from the top of a 102eo(e5ds-n )kdj) wv s0-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the t52 ens)s - eo)(vjwkddower 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 thv 7-ylxvz 1q j69c8rl; i cu1b.yql3mxrown directly upwards with twice the initial speed of another, how much higher will it l xqivz1 xm.qlc-u8 7yb3r6jc1l;vy 9be at its apex?

  02.30: A box falls to the ground from a delivery truck traveling at 30d 46hp 8lo0shd m/s. After hitting th dp6od hs40lh8e road, it slides 45 meters to rest. How long does it take the box to come to rest?

  03.29: An object is thrown upwards wifzt ho/ife 8:: q;s.imth a velocity of 30 m/s near the surface of the earth. After two seconds whz.:sfo qhetf:m8 /i;iat would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different ma6en.tt 1i2x - jijt++vrah s;fss (1m, 2m& 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram in t.nsjh j 21;ai xer6tt+f-vi+dicates 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 upward with idbkdsx:*eb7p5 ed v cy1,os0 u3entical 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 its maximum attained height above the launch point in t* 7x3ek0sdpcbobs1 ey d:,5uv erms of H ?

  04.28: A rubber ball bounces on the ground a :6u5 p wo ab(oxzj,9q.im.fbts 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 betwe.o :fb65a u(9qimojpbt.w x,z en 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 projectile in free x/ydez(n2w9(u1de 4pym/s hu fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of lx 4/u( hz/ye(n1dewmyus2pd9 aunch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The collision of thel x,k,2w bkie93jir*c pebble with the ground below is seen 1.50 sejbl2*rxwci3 9ek, i,kconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking garage. One stu5+nturzxzmmr wa 6k; j .f+v, .yqv;2udent suggested that to determine the height of the garage, they simply had to drop 5, +a+xzrmur wu q.vmn v;y.;t6jk2zftennis 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 line. Its initial positionv2-gyxa 7srt40y9 5pu( tlydaew5nbk x08io+ is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system, the signs of the initial position, initial velocity and acceleratii+5e xoynl0 a5 ykbv(wrgxd74 stp8 ut9 2y-a0on, respectively, are

  04.38: A small point-like object is pk*c cof1xfy,qhhk450 4 kpsx4ulled 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 from0fhcqf4 yohc 544xk*kps1, kx 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 am1e o)ppw10o/xoo1 ley a;no8 tall tower. Half a second later another ro1ppy1;oewomnealox/)810o o ck, twice as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a tr ta (- xa/8;wohkywt0qack. The cart comes to rest/thax;o 0atq-w kwy( 8 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 coming to rest?

  07.11: A cart is initially moving at 0.5 m/s along a trbdi2t36 bqcr-qln 8s3ack. The cart comes to rest after traveling 1 m. The e368tlb 3qrisc-b nq2dxperiment 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 fromo t2emnh38y+blq w8l1 rest and runs in a straight line with a constant acceleration of 8lqm+nb8lyo h 12w3et2$.5\;m/s^2$. 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 resistance from a height 9oyy9g(ofxb3 h above the ground. If thxyg( o3byo9f9e 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 accelerate to the right. At time t=. y)++tcrqbl d5e2tlv0,the objects are at the same initbt 5tlvl.+ yc2q+rd )eial 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 thrmpnrsr.. y,8 pfgd0a:7nnb*j own horizontally 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 represents the timen0.8banm *jsy7,:g. n rpdprf of the object’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The object remains in *t 8mf myu;a ,scmrfwugy(g6o-1d 03xfree 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 of6f3g8c ; mf *y1r-yuwd,0msm(xo u gat time during its flight?

  14.03: An object is dropped into free fall. Through how mhv mcpki el,w e e114568xr c39s0analany meters does the object fall during the first 3.00 seconvar ln1exw1e a sh5m46, pcikcl908e3ds of flight?

  15.02: A box uniformz;*ez ; ckulv923cb 5,qdylyily slides 7.50 m to rest across a flat surface in a time of 12.0 s. Whbl; z5 dlkyc vuz9e3*;yi2cq,at was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a ca -jxfi. his bx ;;g8tce8qz0k/ss n*(lrt uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 *8h0 i c fb8jqssz xe/xg.lsi ;k-n;(ts. Through what distance does the cart move in this time?

  14.16: A toy car initially moves to the right at 6ur8 dxxd;)r 4c0.0 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 followin 48dx)r;x rcudg 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 cm/s. Five seconds later,8/ b3jv -8ys*juzasvvu,r -dutq xw2( 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 s-jz3dw/2 yuvu(sv-ur,8*xas bvt 8 jqtarted. 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 co78xs zkz x;5lpnstant acceleration 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 upward while/mmo g* ne f;l+*q((tt yamn+t in free fall. Which one of the following choices best represents the direction of the object’s accelerat+m+e *tgot/y t(nlma*fn(;q mion during its flight?

  13.26: An object movu zl,. 5yzm5.voclw*ding only to the right completes a 20.0 second trip in two stages, I and II. The average speed of l.y5wom dc*.5l,vzuzthe 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 3+o:; i;rjunj//itws w5mw ndan average speed of 10.0 m/s in two stages. During stage 1, the object moves with a constant velocitjw ;w 5/mr3/tuoj+i ;nw i:dsny 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 rock m/b7javm;4wx) uqsk(:h b6dais dropped from rest. A ball is launched straight downward with an initial speed of 36 m/s at a time 2k7buqma6w)vx4b j(h/md s ;a :.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 cal;q c-kag cmrvv1:/:n0*57nahcyn kn r races with a robot. The robot accelnr7:ncl cqa kk- a;5gv0*ymnc h/n:1verates at $8.50\;m/s^2$ 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. The vertical positi;pz80lo*)zqch(i .( z chubbrst26tion 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 vertica )czr2 thlh i p6zi0q.s(8b; tc*zuo(bl position that is one-half of the maximum height it obtains during its flight?