94.01: Starting from rest, object 1 falls freely for 4.0 seconds, and 76 pq-+c+cgyed+fzxu object 2 falls freely for udpefg6cczq7y+ + +x-8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final spekz/uhztw 033ped of 20.0 m/s in a time of 15.0 s. How far doptz3k3z u0h/wes the car travel during this time?

  94.03: A ball is thrown-z3 swaokm/d - ,t1cpl6 tnuk, 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 ,1nkkpa-6 dzlms3u -ott / cw,the ball?

  95.27: A rocket near the surface of the earth is x/jbol )z . pok.1zc,aum 5e,laccelerating vertically upward .,xmaol, e5o/z1 p kczj)ub.lat $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely fallinnk7v6x9qw m rb fe3/k,g 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 mov63x/9w fv kqm 7kb,erning with a downward velocity closest to:

  95.39: A car starts from re( ugftbn7 2uo4g0+vgvc-m hj 0st 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 ground wilr77d6i lghm: th a speed of 30 m/s. Assume air resistance can be ignored. The height of the building ld ih:7l6mrg7is approximately:

  97.09: At a certain time, an object in free fallg ;a(a8re zwor(b+l*n has velocity 4.0 m/s in the upward direction. What is the approximate velocity of the g+na;rwzba el(* 8 o(robject one second later?

  98.14: How long mustf pc0ni n0k,l 5dhn;3u a $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling objectn ky6p6:o:gb +ubbd r+ is found to be moving downward at 18 m/s. If it continues to fall, two seconds later th6:bgypb+b o6:rud+ nke object would be moving with a speed of

  17.02: A small object is released from rest andnf)n8 3zr su0h6pmqn 4 falls freely for 4.00 s until reaching the ground. What was the height above the ground from which the objp 8qs40hr3 6f mn)nnzuect was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so that itete-9 epv3bk7 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 represents9 ektv3e -ep7b 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 isu10lybyd2 q+)yq wwnq:z)(hh launched straight upward so that 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 height from its launyluqw+ qw) d( 0y1z) hbh:yq2nch?

  98.31: An object sliding down an inclined plane has speed 0.40 m/s two sece1g, q s81v vru:vk b;ox/e;3boi wk)eonds after it begins to slide. Approxo1gq8;x ewe;ukrsi o )vv :b b3/1ek,vimately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the .rr.l uu02w-jhdr8d/evhwa- top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the w8h0ar-j ulr.d.eduvhr w-2/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 directly upwards with twice the p(kbdtp(xj*fh wa+efm6 1,o/. u:ys qinitial speed of another, how much higher will it be at its apex/u,k j(et1+pofyh :aw xbp (q s6m*.fd?

  02.30: A box falls to the ground from a delivery truck 2,q(+ud wdcv;wxq 1esx 2woi81ds wg3 traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long 813(q w,cw 2xwddxw+igs d1sq;uo2evdoes it take the box to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/s near the surfogdc iia z,adz9o71:o2 a +1orace of the earth. After two seconds what would be the direction of the displacement,1+ aoiaa 9oz:7zooidcr1d2 g, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m)d ybv0:mgf2p ; are thrown 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 air resistance is neglig:;ybdg2 mp0 vfible.

  10.25: Two point obje,ux 04b sz ,pykpxcv2*o1h0bfcts are launched straight upward with identical linear momentum.0xfpc ,4xp o 0uvb*2bszh,1ky 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 terms of H ?

  04.28: A rubber ball bounces on the ground as shown. Afxjc y +ee4h*,f2fl-r,nuw bb+q er+v3 ter 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 secon4++vwef -e h,rnjr,cub lb3x*qefy2+d 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 fall achieved j5i6-bh d /;wf8 ywhmbvfaf10ut5w tlw. b*;mits minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projecth/w15;u lw. wy5vm*afb6tidb -t f;8j0b wfh mile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped frf.cz eg( ewx(0om a high vertical cliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit thefxz . cge(ew(0 ground? Ignore air resistance.

  06.03: Three students were arguing aboumsrb/t9; l(x6/ ql qb sesf3b76h)e xat the height of 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 foreh3 a s6 69lets/)q xq/ xflbbsr(mb;7 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 positiom05 asfoq: mmho3(3c c;+ hkxvn is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate ss cmm+x; 3a vf3o:0khmoh(5qcystem, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled downwards by gravityzrvjyc b9h ut7c sk5b*(w eu87,92 fx0re c7cz (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 ths7*z,r9 cbb7chky ezc92 (u wurfex c875jv0tat 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 a tall tow 9ws7ch8btqispx c9,(4zr p s3er. Half a second later another rock, twice a 4(z ,79 ibqh93xpsc ssp8wtcrs massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a tr,n wblmr0ga0 2ack. The 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/g,b2 n al0wrm0s. How far does the cart travel before coming to rest?

  07.11: A cart is initially moving at 0.5 m/s along 27(e0fj6bxcszr gd ,ha 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 at 1 m/s. How far does the hfxszcb deg0j(,r62 7 cart travel before coming to rest?

  08.03: A dog starts from rest and runs in a straight line with a mpg:+1* w8)yzy;s 8 zye1.hoy ybz jgnconstant acceleration of b: y +jypz ;881yem1 .zgnh)y z*yoswg2$.5\;m/s^2$. 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 *d7z)m -d vof ukt.wfm5f .+wyresistance from a height h above the ground. If the5.vwwz o k7yt-+f.f*mdf mu)d 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 timcvjy*r9c c 4sv1b+r/lv5t1yme 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 time yvtclr5j+y cv1rb49 m1v *s/cT by Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizontally with speed 10.0 m/s from a height 303t7wc.ll :rh5q5 zorz8xsaw s jio;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 time of the object’s flight to th;s8.3 wxc3itsz5lrlw7 r 5 q0h zoao:je ground? Ignore air resistance.

  13.10: An object is thrown straight-ye0m ( m3 y5bor7ruc glx59lv upward. The object remains in free fall until it returns to its initial launch point. Which one of the following graphs or375yc5-(0 ymrlmuvb l9gexcould 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 many meters does the-m62 g).p f +q-/ bkqshjo2zbra u-vda object fall during the first 3.0-oq--pam2+2bdzh/k j ) qaguf. vbr 6s0 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest o cx zo7zo64 wcq:oz -9nad3(pacross a flat surface in a time of 12.0 s. What was the initial speed of the box when it started its sla3pc76 zc-no4od: z(9qwxz ooide?

  14.07: Starting from rest, a cart uniformly accelerates to a salxk :b gt.i*/ke68gupeed of 7.60 m/s in a time of 3.00 s. Through what distance does the cart move in thisb8k6k:t/xagg .ilu e * time?

  14.16: A toy car initially mosh/1lrr44xqxx k ,-zhves to the right at 60.0 cm/s. Five seconds later, the car is moving at 40.0 cm/s to thexshxq1rhx/,4 -zk4 lr 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 velocity of the car during the five second motion?

  14.17: A toy car initially moves to the right atw6m1yik3.;2ay e*5 s,utarhl jbwlv 0 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 56.malh1i;u*vral 3 y,tk 0wjybwes2.0 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 with constant acceleration star0vuwd5lng q4s ;q8un+)k j8q mting 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 u )ibavj.k/ 1bt5mmi:y pward while in free fall. Which one of the followingia/ m: mtjv1y)ibb 5.k choices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right comprn 0rr2gal;9jletes 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 mora2;r rj gl90nves 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 trip8 jj2kr/a ,rbp )k;ssn i8od1v 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 righnk bjkv)2i /8;orrasd8j1 s,p t 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 smavn**p rmqk; v/g/e,zbll rock is dropped from rest. A ball is launched straight downward with an initial//;rqv*, zembg*vpkn 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 relative to the rock?

  16.36: On a straight road, a self-driving car races with a robot. T7l 3fkftl4k(kv rs2n)he robot acceleratn lf)(fs7 kr2kvk l43tes 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 verticak+. kh wn5 5b/oiv-hnm+3wripl 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 first at a vev.krkpb 5- hownhi+m i35/nw+rtical position that is one-half of the maximum height it obtains during its flight?