94.01: Starting from rest, object .v0k5d rfv,hti;c1aw 8p rzs61 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, object;d.wcp 10if,v t5khz6rs rv8 a 2 falls:

  94.02: A car starts from rest and uniformly accelerates tn 7592k rxyamxoo5d* go a final speed of 20.0 m/s in a xgx75 kro o9am*d25nytime 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 bicn41ebr x9;horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial velocity of tb19i4c bx;nrehe ball?

  95.27: A rocket near the p pu.5 fsbi7sv :nn3i *ws,*eysurface of the earth is accelerating vertically upward ss*b,v5ue7:*fwnyinp3i. p s at $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is found to6m:no* dk 7viy be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be moving wit6y:7i *kn dvmoh a downward velocity closest to:

  95.39: A car starts from rest and acceler +u3v88xz8 3hu veoymoates 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 grounh nxhp *bo6c 2ihs.3m.d with a speed of 30 m/s. Assume air resin mh i b6o2sp3*cxh.h.stance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fz shht1p32),lo5 7wbs x kj ma1jk)5+rrcqu,xall has velocity 4.0 m/s in the upward direction. What is the approximate velocity of the ob,rbj3kj ztl + su5so 2,xk w1mh))1qh7ap5x crject one second later?

  98.14: How long must ao u 57 q:rj 1zs6a+nabhgm2kx3 $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling obfe/bs j)1c1cdkee4 b.ject is found to be moving downward at 18 m/s. If it continueskbb fe11ec).4/j sc de 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 freely for 4.00of2, (rvfn,ra.3 bb cw yr9xr; s until reaching the ground. What was the heighb,rvwr(x2b 9c3f f ayon;r.r,t above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg w,iqgw 2f d- dn2f2(i aao7ku6y2dt o/is launched straight upward so that it rises to a maximum2kog/fd(iw6-adfy2od , n u 2ta7iq2 w 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 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 straigffr108i0bt9t u yy e ,0fbvtt5ht upward so that it rises to t bff0ytr0yv,i8fue 50 bt91ta 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 launch?

  98.31: An object sliding;q(zoq;q q qn02) av zddf)mg/ down an inclined plane has speed 0.40 m/s two seconds after it bzfaq)2mqnq/(qv;zqd); d o0 gegins 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 towevr 9u. ck/1oyn yhuw .r x9xp9n-pxjrh 8a871ar with a speed of 15 m/s. Coin II is dropped (vnr.ax1 8ujx1uac py9 r h9hynok9rwp-/x7. 8zero 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 with twice the initial speed 6 yyk(9wl4z0-w rq 9 b:bup:8ftdyelxof another, how much highewp r 6buw(z: 8yktq 90ye9fb-y4xd: llr will it be at its apex?

  02.30: A box falls to the ground from a delivery s5v.w30ls dpb 0 i7nyitruck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long d75pi0bw.0iy svsdl3 noes it take the box to come to rest?

  03.29: An object is thrown upwards woe64dl kbs+jt fj;*j6ith a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, velocity and acceleratiobkflt64 j ejo; *dj+s6n?
displacement velocity acceleration

  04.10: Three stones of different l) 0trvuk3/lfp:/-jg.6s xgk6i5/ bc dzn ifhmass (1m, 2m& 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity ofxntu6 rgf/)di5v/ k.-hb isfj 63czkl0p/l g: 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 st13y o kbg+qk;fc(j0, hgcl* gpraight upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch poib1;,0yp*fg(3+gko cchjk lq gnt. 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 asfua bpg)o*hb99u43i b shown. After each bounce, the ball reaches one-half the height of the bounce before it. If ti 93habbgpub*fuo4) 9 he time the ball was in the air between 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 fall achieved its mini 10-c qp5xgglhmum speed during flight. If that minimum speed was 15.0 m/sl xp1g0qch 5-g, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical clif4ol(yagyu5 o 8w/p+e ef. The collision of the pebble with the ground below is seen 1 /+o e p8oue5a(y4lwgy.50 seconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing abo/ e3 lj7+ eoabpdhgd0/l 6ba-nut the height of a parking garage. One student suggested that to determine the height of the gara0jd/g/d3p +oalhl6aeb7 en-bge, 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 initialkp.iv7z9/ ew n position is x0 = -5 meters and it is moving away from the origin and slowing down.ep9 w .7vki/zn In this coordinate system, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled downwards by gravity (diweh35m*f- q7+ojlp oown the plane of the page) but is constrained to exactly follow each of the frictionless pathways shown. Rank these three paths from shemw+o7-j opf *ih3l 5qortest 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 + :g0iqv19ntkl8qycrp/eb kyq os 862 a tall tower. Half a second later another rock, twice as massive as the y9+201g nt8 ck q:yspbilrevk/oq 86q first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s alon/r(ij z8(l elp p*csstuy0pels*3 f43g 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(3**p3c i0l(8 le/lf yztpu essrpj4s 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 comes towsw:ft 8c:;dz rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is initially movinws:d;8czw:t f g at 1 m/s. How far does the cart travel before coming to rest?

  08.03: A dog starts from rest and runs in a strat(y r*bddi6qpc,suqg/kfz -: 1s kq01ight line with a constant acceleratiofzsc (b 6 ik* -y/ugqrs0tqd pd11qk,:n 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 re3bzmp gzl1qj2 jl 3-fup5m .l.sistance 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 rema-3q2m b .3l ujfzl1p.l mgpjz5ining distance of 0.5h?

  10.38: Two objects both mov haa mmx-1q7s4s+s.ine and 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 soms -4as1+ms in7hx.a qme 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 thrown horizontally /w+8 cylqvax: with speed 10.0 m/s from a height H above the /aw:qx 8l+ cyvground. 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 the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The object remain sov2rn/ q0,xls in free fall until it returns to its initial launch point. Which onvsl /qx,0n2or e 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. Through how many meters does th3wm (lp aehg(we7y i:2e object fall((ww2glm :yehap7ei 3 during the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface in a time of q2jq 8gv n,hzs+59ayqwd 2s;j 12.0 s. What was s,zy gs8w2+v2qqj5 han;dqj9the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a specf+jxk*u(pc p: :6 t8sh6jk zyed of 7.60 m/s in a time of 3.k xh*t:u6s fppc 6jy+c j(k8z: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. Fix2s -szcp vou49d6o2pve 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 ts2zpo dv26s- xu4p9co he 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 at 60yr,: .t ggx o3ow o-gto524axb.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 xy3x-or t.5goo,4tgbow:g2ais 10.0 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 starting with velocgzkcl k/ jt26;t7 2*vn1 vcidtity $v_0 = 5.00\;m/s$ 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 m,ip:t2ta*eem oving upward while in free fall. Which one of the following choices best represents the direction of the object’s acceleration duringe:2 im t*te,pa its flight?

  13.26: An object moving only to the rightnsd4 o;3sjkpou5)rj4a(s, mxd h6sb , 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 seconds 4o53kj; (bd6 x,umo, h4pssanjdssr)of stage II?

  15.32: An object moving along a line completes a oj9ra:nba. zxu qi58*20.0 second trip with an average speed of 10.0 m/s in two stages. During stage 1, the objeib5qxjn a9zu8 * .aro:ct moves with a 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 high cliff, a small rock is droptxchp81bewd 7i y,.h1ped from rest. 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 fallen 28.0 m further than the initially dropped rock, what is the speed of the ball relative to thi18,tbe1whdy xph c 7.e rock?

  16.36: On a straight road, a self-drivin7zdgk/j89mth3b iu,c 0 1z)r5lrg zwng car races with a robot. The robot acceleraterd) lkw9/incz0 gu8r 51jzzgb 7mh,t3s 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 p s32 gv5y*hmmfosition 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 maximum height it obtains ds2 fvgmy 5m3*huring its flight?