94.01: Starting from rest, o 2qgs1 v.)cfvqbject 1 falls freely for 4.0 seconds, and object 2 falls freel ) vqqc12.fvgsy for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from resr;kduo q 7.s1zt 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 thuq1 od;7 rs.zkis time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. It lands t n78lz7vxpvqb4q9b) 6.0 s later with a velocittx z v4vq lp787)bqbn9y of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is accelerating verticallyb rl pa22qmq5dy 3md4)z4ag m/ upward aqg r m2yad)mqd4la5b24 /mz 3pt $10\;m/s^2$. 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 me*9jb6 ad3 f 74jm/5dt mutxsd,e *rxf/s at one instant. If it continues to fall, one second later the object would be moving with a downward velocityx6ds7 adjt9fm53/t,fx*jr4e d b*um e closest to:

  95.39: A car starts from h;og0fckc x67rest and 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 the top of a building strikes the groqe +z(yx4fq-)p1wglhlyr tt l**nq /. und with a speed of 30 m/s. Assume air resiste qn)zy +l4twl tp/qg rhlq fy*(-.x1*ance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall had;ss) -8 kfps7r.lb v7vym ,cns velocity 4.0 m/s in the upward direction. What is the apppcsvd77k sfyr8 )vm ns. bl-;,roximate velocity of the object one second later?

  98.14: How long must a 3n.uxbi eb) ar7hf/- p$2.5\;m/s^2$ 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. If vbcg (o94jid3m4pbw 4 it continues to fall, two seconds later the object would be movino9wmi3d(4 4cpg b bj4vg with a speed of

  17.02: A small object is released from rest and falls frm -yzn. sg-;em5p8bly9pz) dreely for 4.00 s until reaching the ground. What was the heig szy-b9.5zm d) nmy8pr;l-ge pht above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launchedbt c 790c,g5 cfny1exa23rwdo 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 choices best represents the magnitudeae gt39x,bfoc72 1r c50dw nyc 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 that 4me /b*e;jrx g: 84nzpr(jeepit 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 maxi4 xe 8g4r/:bezppe mjrj(e; *nmum height from its launch?

  98.31: An object sliding down an inclined plane has s rx1kj nb4btzza43 e (vsr:/:wpeed 0.40 m/s two seconds afterb sn4bwz 4 1axt/z:(3jrk :erv it begins to slide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower with a speed of 15 ;+sm*ke9lr )z c6icvyjb*o8g m/s. Coin II is drz6m);*elgb ock9 c j8sv+iy*r opped (zero initial speed) 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 directln -/swjquj4f ;y upwards with twice the initial speed of another, how much higher will it be at its apeuwfjq s4j/-n; x?

  02.30: A box falls to the ground from a delivery .cx4(m 9d *ffcfj2e zctruck traveling at 30 m/s. After hitting the road, it slides 45 metercfxf*(42d mj cec.9zf s to rest. How long does it take the box to come to rest?

  03.29: An object is thrown upwards with a veloem)uiwvv2t +vjxt9 /5city of 30 m/s near the surface of the earth. After two seconds what would be the direction of the ve5 t)+w/jt2 xivmuv9displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrownt3bn .(eqni2e c7oyz0dms1 0w vertically 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 each stone. Assume aee(1wnoyqc0dt03bi.mzn7 2s ir resistance is negligible.

  10.25: Two point objects are launched straigodv-2uxy1yd 5ajb lw q7(m7h6ht upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the lau(6j bhy72d u7-a1o dv5wymq lxnch 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 shtgh.:/edix7wd -h s ;aown. 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 b :ed sh7.-wtd/;ga ixhe the time between the second and third bounce?

  16.21: At 1.94 s after launch, a projectile in fre k decu/eewr, 63j;pv h ;8fm1h6d5xloe fall achieved its minimum speed during flight. If that minimum spe luw;c1,j6dhdx pf3;keh85ev/ omr6eed 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 cliu j5jbc) um-t4zt, 5qiff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. Wit-) 5uq5bcm4uj ,t zijth what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about tw0)h 5udhkh ew h2zijj(78w i,he height of a parking garage. One student sugg52w0jd7 izjheh )hh,wu8 ki (wested 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, approximately how tall is the parking garage?

  05.07: A snail is moving along a straight line. Its initiapvsj9.r y*)t xl 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 position, initial velocity and acceleration, re *y)ptj.svrx9 spectively, are

  04.38: A small point-like object is pulled downwards by gralol*qlus2n uy; -ydh-(a vu;: vity (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 ;;q-yu2la-dhvl(u* u:slon y 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 dropped8 c9pvm4 +s211ri j gxfrgze/h from the top of a tall tower. Half a second later another eps/hr1 mr +ic8 gxvgfj14z92rock, 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 track. The ca7 lem*ys l*8iert comes to rest after traveling 1 m. The experiment is repelli* yee87sm *ated 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 track. The cart zioag81me,o 8s yh4*hcomes 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 cart travel before cominmhh4*a1i 8eso,zoy8g g to rest?

  08.03: A dog starts from rest and runs in a straight line with a constan *g7o2qj3fo99x ejvidt acceleration of 2fi329*qogvejj 9xo 7d$.5\;m/s^2$. 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 froj;zoop)s0 i6n nb+rf+ m a height h above thes0ir6 fz+ opjn;bon) + ground. 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 accelerate to(2wq6tzqf9n s 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 ratio of the distance traveled in this tim6sqztf2q( 9nwe 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 heigh.(+,p1mvms+ hyxx+ cg ziw4d0z6 y pxot H above the ground. Thez m+p.4g v p,0( xdzi1w6chx+ xyyo+sm 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 ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The object re/. qw5e mm4 9upbk bi0w+yy7,8qkb cbemains 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 functionuimb97c 4pew yq,5 b/w8 .+qbbmek0ky of time during its flight?

  14.03: An object is dropped into free fall. Th+elml, hynu:-cy.gd5 rx2gj-rough how many meters does the object fa5 llyghcy xg+,-dr. jnu-m:2e ll during the first 3.00 seconds of flight?

  15.02: A box uniformly s g f+: hs n:oymmp3x47yxym(5le+dp/l lides 7.50 m to rest across a flat surface in a time of 12.0 s. What was the initial speed of the bof +h 3gmyx+:ypnoly:lmmx(5 p 4e7sd /x when it started its slide?

  14.07: Starting from rest, a cart u,5q v usad3yo;;8m p4yv4hm mwniformly accelerates to a speed of 7.60 m/s in a time of ;5mqpmu;3s,8 am ov vdy4 yh4w3.00 s. Through what distance does the cart move in this time?

  14.16: A toy car initially moves to the right at7gpqlw4.km1n j 2ok:k 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 : 7o.k 2lnqw1gk4m pkjone 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 cm/s. Five seconds late(rqxp6+0qvz /t: g.rz w3ln rer, 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 ar + qtr 0l6zzxpqvg/wer .:n(3cceleration of the car during the five second motion?

  14.33: An object moves with constant acceleration starting with veloci v x22q0:rp/rj zxq0l, ljh,tk: ud3obty $v_0 = 5.00\;m/s$ 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 upwarm x06)w2ibcfs d while in free fall. Which one of the following choices best represents the direction of the object’sc)xm62b w0 ifs acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 second triwz:9azl ;9k0kdlp8 wd p in two stages, I and II. The average speed of the entire trip is 10.0 m/s. For stage I, the object moves 9d 0:wzlzkp wk9ad8;l 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 compl+x drkvk- 1w -.(ndw;x f-qwuzetes 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 covn zkfw-du +w1dxr-k(x-w.q;nstant 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 cyh.q d /62;*b9zzwxy ;xwphjc(+e mcaliff, a small 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 h;jpwy2ew 6zm*c zhax /.q db;+9c(xyrock 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 car r j0fx4b :l,5: wmoaev8bffs)qaces with a robot. The robot acceleratq:fxe0o 4l safvb,w8fm5:)j bes 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 position of the balbl 4 n:)(e2i -g: si9yfzzyjbfl 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 v2-:nyybjzb gs f 9zeif(:li 4)ertical position that is one-half of the maximum height it obtains during its flight?