94.01: Starting from ylfq/4 n: h;;aiy02ksvvpg n8 p7szn 5rest, object 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 second vglk0nsnh8zfs7 pi/y25 n ay:pqv 4;;s. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final speed i5 *urp *2uccnu*/ybrj5xx4h of 20.0 m/s in xpu /ny*rurc 452 xjc**u5hbi a 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 no horizontal velocity. It 9z bbdy:::qnbqa; gu+ b8ees+lands 6.0 s later with a velocity 8qzng be:es9u: bba:y ;+ +qdbof 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is accelerating vertically upwarlo t6nw11et a)d at1wta t61le) no $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is found tivkzpl7x2 qzh(,b p9)i 48d:0n:cu siqv s*dyo be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object wou9:lv(z7 :sd42z8 xiudpph ny,0*cqq)vbkis ild be moving with a downward velocity closest to:

  95.39: A car starts from rest and acceleratug7*ily sm-n: z 3rn*ves 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 fromm6npa, 7u .bpb the top of a building strikes the ground with a speed of aup7,bpb 6m.n30 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 ha3 s 5-a3eu(pe :/*dfdgzdsf2oovgh8f s velocity 4.0 m/s in the upward direction. What is the approx3(5gdzs d8* fvf/f2s p:ho-odeg 3aeuimate velocity of the object one second later?

  98.14: How long must aa izdeau/;/dd mg88z7 $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling objelaytt(e)zuxy25; g )ict is found to be moving downward at 18 m/s. If it contiy5)y2x a)u( ; ittelgznues 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 freely3t r,ilm a3() mrnl0ij+;ub cn for 4.00 s until reaching the ground. What was the height above the ground from which the bn l 0ur;m3crma+)i jtn(,3liobject was released?

  11.06: A ball of mass =0.100 kg is l8z l(.djf 6qs/iq9khlaunched 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 followf(d 69 /lsq8ihql. zjking 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 straight upward cf- s6tkl6(3p oqww s-so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resislw(kto3csq 6 6fpws --tance. Approximately how much time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down s (s ,6:46btabpjq.dip 3ayrgan inclined plane has speed 0.40 m/s two seconds after it begins to s,bit a :6bdgyp.4r(6s p 3ajqslide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 10tvz b*/mq)z/s0-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s ltz)/b/ z m*qvsater. 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 directe gne6fh*s),d l :6wuqru -3blly upwards with twice the initial speed of another, how much higher will it beqrdu)l,-n:6e3l6 *h e bsgwuf at its apex?

  02.30: A box falls t b6)bnik7u)oi fnogjng0-bb 4+t u+*lo the ground from a delivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest.u0*o n74b ii kn)g bug+6f nboljtb)+- How long does it take the box to come to rest?

  03.29: An object is th vn..c d wj2.exj;ytk6rown upwards with a velocity of 30 m/s near the surface of the earth. After two seconds ;ktyc. j vwn.2dj.6ex what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vertically upvyz8gi. xc .5mward 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 each stone. Assume air resistance is negligible..vi85.ycz mgx

  10.25: Two point objects are launch,t *g*e/qosbn/ mf8 c ;ybd2lred straight upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If object 2 has mass 2 b/ecn r;l8mo*sqg ytfd, *b/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 shpv6pjn -tir:wt2yfj *taei7r8q. u 0tj-4m j 2own. After 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 uajwnir4j-:t62vtt 2 yr .-fejm 0qtj i7p8p*and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fall achieved r00+bc35 yxbbjmb0vb its minimum speed during flight. If that minimum sv0bbb mb+jy5r00x3b cpeed 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 vertical clim1ds-cjkf, e * yd1*gtff. The collision of the pebble with the ground below is seen 1.50 sf*d,my -*kc g1jdse t1econds 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 ofn.jsx:qs51 z d a parking garage. One student suggested that to determine the height of the 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, approximatelx sqsn5d .zj:1y how tall is the parking garage?

  05.07: A snail is moving along a straight line. Its initial posit+y bnz; 33 dm7t 2q)epq*raftaion is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate sysfqer ztt+b 2q7a3y3m;a)pnd *tem, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled downwards by grq84 +7;w nt j:cy jlbxq2id6eyo r8cx,avity (down the plane of the page) but is constrained to exactly folqetxx+ lrj qcy688bwd;ji2n y4,:o 7clow 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 and that it takes negligible time.

  06.13: A rock is drop61xxpvq* a7iu-z om0y ped from the top of a tall tower. Half a second later another rock, twice as massive as the first, is dropped. Ignorino 0xyau*m7zv p-i6qx1g air resistance,

  06.18: A cart is initially moving at 0( q+boi8o -9yhbcuw/eh+mu1tb+ gwe4.5 m/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cartyt4qohbw- +/b 1 uuee(i m+o+w9hc8gb is initially moving at 1 m/s. How far does the cart travel before coming to rest?

  07.11: A cart is initiap s/aijm99 ru iwnb- ,2s+v 9akstz;b;lly moving at 0.5 m/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is initially moving atai;,s/mb9t u9irk 29 va zs-jswb;np+ 1 m/s. How far does the cart travel before coming to rest?

  08.03: A dog starts from rest and runs 0 r6nkrot o-r6* b(jhdin a straight line with a constant acceleration r( k*-rjdbohn t6o60 rof 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 withoutv6dt4osee5(v hu 3r7h6s ,p at 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 remaintao,(trphd he euv sv6s73465ing distance of 0.5h?

  10.38: Two objects both move and uniformly 0s)lm,o(a5e gb(cghr 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 objects is the same. What is the rati0s hg5m)gl a(e(r,cob o of the distance traveled in this time T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown h4u sdun8n+ ka7orizontally 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 represn7uku8 an+ s4dents the time of the object’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown stra1 pu vf x69kf+4ntj8jlight upward. The object remains in free fall until it returns to its initial launch point. Which one of the following graphs co8xu f1+jpv4jn9lft 6k uld represent the velocity of the object as a function of time during its flight?

  14.03: An object is dropped into 9fxq6u 1pvlq; :ivecw3 * z;nffree fall. Through how many meters does the object fall duvup;wfflnizqx:q6 19; *v 3 cering the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat s mhor6ba05nm-d(ic5qg c s4 (gurface in a time of 12.0 s. What was the initial speed of the bocgaqcimo5dn5 s r(- g04(mbh6x when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates t/;t9wrz4so :jcj8 pj so a speed of 7.60 m/s in a tiwpst: c;z/j9jo4 8 rsjme of 3.00 s. Through what distance does the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five seconds latga.9-l.fqy uz er, 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 magniq .-af9gu. lzytude of the average velocity of the car during the five second motion?

  14.17: A toy car initially moves to the righe -h( btncrzf.8;rl.8( tko6i mqbn r/t 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 acceleration oflert(ch kmot i/brb;.f -8(8qr6z n.n the car during the five second motion?

  14.33: An object moves*vtj ;xxr1aa0 lnn4n0f9* j+tnkvu9.,zvmih with constant 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 initialy gl4jm4og.-q g.ehc8ly is moving upward while in free fall. Which one of the following choices besl4qgc8j4g -eg.oh y.m t represents the direction of the object’s acceleration during its flight?

  13.26: An object moving 7zg/or/gyxq19 8 xe lhonly 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 she y1g7o8xzr 9/x/qgl econds of stage II?

  15.32: An object moving alon;o; zuz 2)qsqmg a line completes a 20.0 second trip with an average speed of 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 magnitudq;om uz)2; zsqe 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 re:*wvw my(i;f e,auz +est. 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 fwz:e,ivy u;ef a*m( w+allen 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 roa -a1 2zhf*eal)h1a obid, a self-driving car races with a robot. The robot acceleraoa)121falha*-izbhe tes 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 ebw c:d 4382q2wor aocvertical position of the ball 0owr3 c2:wc8be42od aq .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-half of the maximum height it obtains during its flight?