94.01: Starting from rest, object 1 falls fr wmv/(z y(8+q kahe9u fcmcw-+eely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, object 2 +c k (+8emwz/m9(ahwvuqfcy-falls:

  94.02: A car starts from rest and uniformly acceleratejc1njjsd6 wb5n 5:z u2s to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travel during thndj5jnju5 b2s: 6wz1cis time?

  94.03: A ball is thrown off a high clwcv12u0cg*v4m.wnf 4s n 3oeiiff with no horizontal velocity. It lands 6.0 s later with a vel.*41 wo0 c gvmsiu3e4cvnn2wf ocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is accelerating vertically upwao-h7 *2fim t/ub8zexard attm *uxea 78/h-of ibz2 $10\;m/s^2$. 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 at one v ue4 i;6ipvn6instant. If it continues to fall, one second later the object would n;v 64iie6uvp be moving with a downward velocity closest to:

  95.39: A car starts from rest and accelerates atztv tg227d4hw krmm4vx7 , z/ v9my6mv /(rvsu $0.80\;m/s^2$ 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 strikcob7+v5 x05 ,ihdl*:id m n4c/k agtnkes the ground with a speed of 30 ktak55 *7nl+gvd0hi 4cbdx ,:n/ oic mm/s. Assume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an objec;hd teqsar;1*t in free fall has velocity 4.0 m/s in the upward direction. What is the approximate velocity of the objecta1;qse ;htdr * one second later?

  98.14: How long must a tu5a zpfs*. 0yxd:c 8b$2.5\;m/s^2$ 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 i;nj1 wgtzw)xh: 7(h9a; nt jkot cont j)n;9h( wz gta;hxk 1:7nojwtinues to fall, two seconds later the object would be moving with a speed of

  17.02: A small object is relg. w6nlah l71 x9lv,xleased from rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground from which tnxv9lxlwh, l a16 .gl7he object was released?

  11.06: A ball of mass =0.100 kg is launched s aww blyf2:r-xwkd) mxsl6wt+z9 .8 )htraight 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, whichb8zdw.rwh lf +) s92kx6al-ywxw):tm 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 =0.100 kg is launched strabu:v)g.sf,frie ; nd9ight 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 rei:rb9vgdu ne.;s)f,fach the maximum height from its launch?

  98.31: An object sliding down an inclined plane has speed 0.40 m/s two second ep6(g(vlkh+7n szvvy:d9i*5 /w pkyvs after it begins tv/v h +6p (gysy(7v5dvkn:iewz 9*pklo slide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the,fb:;+0- qocspek3ep(9d ot urulhth c-a)y: top of a 100-m tower with a speed of 15 m/s. Coin IIoep( 0ear-3:t9pbf oth+h k)c cqud- :u;sy,l is dropped (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 directly upwards wieqlqf6v+s*k dqr 6u;8th twice the initial speed of another, how much higher will it be at its apex* ek u+;6dqsfrqv6q 8l?

  02.30: A box falls to the ground from a delivery truck traveling at 30 m/samdu.8 7 z5w/,b gkzpa.f h+nh. Afteu,. z/dmfba5 w.h8k pg 7+zahnr hitting the 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 with a velocity of 30 m/s near the s:c2dw1d(gw cib6 d,wturface of the earth. Ad(6c 1:bwtgcw w2i ,ddfter two seconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) qm7tq.(q*b hqoqa ,(bare thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank from hi,(7 qqtm (aqohb*.q qbgh to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched x *p9sx rpwa1ll /rw(+a(dlm /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 2M, what is its maximum attained height above the launch point in terms x( mp+9 xlsala/r(1wpwd/l* r of H ?

  04.28: A rubber ball bounces on the ground as shown. After each bfxkdxz :lx8gy 4*0fdj+78b gm;sicd8 ounce, the ball reaches one-half the height of the bounce before it. If the time the ball was in the air betwed8ddjfx:my4b + kxg7z0 xg8fs* c8l;ien 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 pfh-3 k4 r-dfqdd9z8 /pdkkr )q gd*ar,rojectile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle off 9d8 -/gkrqaf,hrdz*d3p qd-4 rdkk) launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The collision of tihz)n;xhix jp 1drhr845y ,j-he pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore aiyhhnh;pd)j 41,zx j-5r8 r ixir resistance.

  06.03: Three students were arguing about hjpl1se8 vow)c 8an 39the height of a parking garage. One student suggested that to determine the height of the gsp1)8cn3vhje o8 9 wlaarage, 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 initial position is x0 = -6s8f y no:ql;30.ll*ogje z wr5 m8ozo l0le wgy: . l3fqrnsj6;*eters 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, respectively, are

  04.38: A small point-like 9u lyyrxb -ga;6x.3yoobject is pulled downwards by gravity (down the plane oflo.yy-6 3ga b9xyu;rx 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 and that it takes negligible time.

  06.13: A rock is dropped from the top of a tall to8 b naot/b(-j9hlak(ower. Half a second later another rock, twice as massive as the first, is dropped. Ignoring air j bto(n8(oa/khab9 l-resistance,

  06.18: A cart is initially moving at 0ide4wi2hwo/l+ e)9 m l.5 m/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same tra wli)9od m2l+4ihe we/ck, 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 car*8jrs tgp2w)o6v( jhyt comes to rest after traveling 1 m. The experiment is repeated on theh p (sw*rj82otvgjy6) 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 frog :x5lnm zerp.py 0e8/t0c ms(m rest and runs in a straight line with a constant accele:g0x 0ypp5 e czsl/rmt (ne.8mration 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 resistance frorxc:o 8 vo e*,eg2bs0vm a height h above the ground0x ve8gr, voceb:s2o*. 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 andhz,5ui )fji.g uniformly 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 ratio of the distance traveled in this time T by Objec zi),h .fj5uigt 2 to that traveled by Object 1?

  12.26: An object is thrown horizontally with speedoog+2ur i y2ep ,6p4vuelm1q9 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 6 ,yomopr4l v2u i+guqe29pe1of 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 obr z ;8fr9b *enqddc// sjoc(:hject remains in free fall until it returns to its initialzfcbdd/o/(; c: j* rhr 9nseq8 launch point. Which 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. Throug2oa wbljhm;cl0//)ry:vm4 vw(pytj .h how many meters does the object fall during the first 3.00 sec4tjvhl .om;/ymc v(:)jw0l /rbwa2yp onds of flight?

  15.02: A box uniformly slides 7.50 m to rest k9ikg9 (8frs eacross a flat surface in a time of 12.0 s. What was thek9(e 8fkgr 9is initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart unityiqpsesw )p)6xvj ,7 :)i o*34kgjlq formly accelerates to a speed of 7.60 m/s in a *jp v: 6j4gosql )pxwtii,e7kqs)y )3time 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 - be+3ahnvg-a60.0 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 averageea h-bv-g3 +na 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 lax:slaq1/o+vk0 v 0d8 qyfc9gcter, 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 the9csvok:gc01q lxf q+0 yad 8v/ average acceleration of the car during the five second motion?

  14.33: An object moves with constant acceleration sthxq98g msv 8w9arting 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 in free fall. Which one pf ztgt vu):h,dv(,05q+ xsix(h alo:of the following choices best repre+ z v oh h:aftd(5vgt:l,spu)x,x0q( isents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to t k2 6r2g:pwp xfe5hh+xhe 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 obj 2+hxpeh65gr pw:f k2xect 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 2 d.fm -m4:ti8wkoj7ncp2 ue+u0.0 second trip with an average speed of 10.0 m/s in two stages. During stage 1, the object moves with wo+e78 f: m2 jti4u. -nkpmcuda 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 hige hh fa 3)y7o6hot*w2kh cliff, 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 afteoyfk6hta7*h)w 23eo hr 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 wit/4frb ui2anbii. (i ;jh a robot. The robot acceleraf2n4 (uj r/iii babi;.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 laun9.ovdwth 2 :ktl:),tkz4a nahched vertically 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 first at a vertical position that is one-half of the maxi a.4h:wt,zot9hlnk:)a2 tdkv mum height it obtains during its flight?