94.01: Starting from rest, obrovcazs1 o08wi02+o x ject 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 sec8iz 00wvaso oox+r 12conds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and u9/zssm5-s sw nauh5b- 02ayw zniformly accelerates to a final speed of 20.0 m/s -shuaam5sy 5 zs9ws/bw0 n-z2in a time of 15.0 s. How far does the car travel during this time?

  94.03: A ball is thrown off ne lnmn7c.o62uwq / y aez.):ja 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 e.)2nc owjane:zuy q.l67n /mthe ball?

  95.27: A rocket near the surface of the earth is accelerating vertically upwar49 2fs ccc+ 6el4rvyhjd at 2fcj96c4 cy rvhlse+4$10\;m/s^2$. 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 wlo1.-9t(oai -kmuo 2/sumyy be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be moving with a downwao.s2 iw9 -yuya -o1/omlkt(murd velocity closest to:

  95.39: A car starts from rest and accelerates a7vk;-;.x7 mmukr5 ,rxvi acbot $0.80\;m/s^2$ 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 strikes55mq h3 edsasred6w:/ the ground with a speed of 30 m/s. Assume air resistance can b a5s5eh /es:dd6 mrqw3e ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocrj 5vcog/g:- kity 4.0 m/s in the upward direction. What is the approximate velocity of the objj:/gcv ro-5kg ect one second later?

  98.14: How long must a j1oxg,y+ zb+t $2.5\;m/s^2$ 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 do2xes. ge 1vo b0wu,sc.7*jio3 dcll4 lj(o il7wnward at 18 m/s. If it continues to fall, two seconds later the object would be movc3e0iljo ls71u2o(wgjl d.4vcexo ,l *.i7 sbing with a speed of

  17.02: A small object is releas 6i2:xn4cybpy9 oud 7lkgf1h,ed from rest and falls freely for 4.00 s until reaching the ground. What was the heightl7c n 2,19yyo:6kgupd if4xhb above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so that it ri2m 3 +s ks(a*dyqws2wfbz60jw ses to a maximum height of 12.0 m above the launch point. Ignore air resistance. Whb *+ wszq2awsy( jws62mkd 03fen 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 launche em6w.o/;;lml8ubfv tr wgn 1o6 u,m*ud 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 fronwlm, u;o6f.gemmtvbo8l u;6 *ru w1/m its launch?

  98.31: An object sliding d7y*x us+z2zk pkn 2h4 8kzjvn.own an inclined plane has speed 0.40 m/s two seconds after it begzjhx *zyk4v+7 pu2n 8skkzn.2ins to slide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upwardweejt6m:z vyb qqb.f5soy9q 60s/w0 / from the top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the toq66 y0me 0o/wqbw t9es: y5j/qzbs. vfp 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 uo,m ge;ak64xzpwards with twice the initial speed of another, how much mexag; ,kz 4o6higher will it be at its apex?

  02.30: A box falls to the ground from a delivery truck traveling at 30 m/s. 6yeh ;.stf11 i-dlb/v:r st b-gdg*zmqx /p o2After hitting the rothp: s b1xergv- b/21l sd*6q;mdy/-o iz.ftgad, 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 37idq9m*r ao6p0 m/s near the surface of the earth. After two seconds what would be the direction ofp6o7rmi9 dq* a the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different m wzfx-.z3l r)v21civ tass (1m, 2m& 3m) 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 negvzxwtc2zv-rf3 1li.) ligible.

  10.25: Two point objects are launched straight upwarriab na -l*3p2d with identical linear momentum. Object 1 has mass M ani-*npr3l a a2bd 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 bouncjtt7 0b5t0 .bb 4vrcebnnme p2m7j8d*es on the ground as shown. 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 bttjtmc0rp *7d5e jevb42 7n08.mbb nbounce 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 acv-- dfvfm svr; .gp4c9hieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of .r4 pcfgvfmd s9 vv;--launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The collilqk6oz4 3v:z r*0ke ,-q.cacyv ud* tssion of the pebble with the ground below is seen 1.50 second3uq -cz*k4z0osdv.vt * e ra,q6ckyl:s 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 oy86v 1qp 0dibgwbi17 ftf/t(r3dvr j hz-8vd.f a parking garage. One student suggested that to determine the height of the g67wdrr.-q vd1vv gf/y 308ipt tbizdf18hbj(arage, 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 strnq /jypb0b-r zy75w0 xaight line. Its initial 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, respe-zqy0b/y 5wj70 bxpn rctively, are

  04.38: A small point-like object is pulled downwards by gravity (down (l73bd yvbn5ej / z+a *ak5(euug.oyx the plane of the page) but is constrained to exactly follow each of the frictionless pathways shown. Rank these three paths from shortest to lonvzn * uexeoa3/ 5.u+(bak(glbyjy5d 7gest 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 m+jg*gw5fk dss u; 5t4a tall tower. Half a second later another rock, twice ask5gw tfu;d s+s4g 5*jm massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s alonre 8b c;f-00 ncyqopo(g a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the sam(yc- ;enb8 0o rqofp0ce 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 comesem0 e*:isn,d s 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 beforsn:,ie0*dsm ee coming to rest?

  08.03: A dog starts from rest and runs in a straight line whk4 ga -v0xx0pith a constant accele xgh4a0-k0xvpration 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 resthub1tg 3cya0m+fq+li.el4-z falls without 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 rema 3+0 aqy+blh4e f -gi1ltcu.mzining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerhx9 bde)y0ig+3s( r frate 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 thi (drxy rhg+e9 f03b)iss time T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizontally with speed 10.0 m/s; ;t;/fvvif/bsty:r9 l dv1os from a height H above the ground. The object reaches the ground with a speed of 20.0 m/s. Which one of the f f;b/til;9 rso;dvv 1yt /fs:vollowing 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 objeh*8ylm0 9b3z/z88m du aiqke ect remains in free fall until it returns to its initial launch point. Which one of the fb8 a8yk9lu0*dm ez8i 3zq /ehmollowing 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 doesm nv: , dohopdca*;p,l f5e j7kx54b0x the object fall during the first 3.00 seconds of f,5x; 7v,cpla05jfnhmx:*4b d dk p ooelight?

  15.02: A box uniformly slides 7.50qf) x tjluv/ 3zq2w,o: m to rest across a flat surface in a time of 12.0 s. What was the initial speed of the box when it started its slide?:qq, lofw)3 xz/2t vju

  14.07: Starting from rest, a cart uniformly acd15qg mb9:qpfcelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does the cart move51b9qqd g m:pf in this time?

  14.16: A toy car initially moves t08(ekvi * ,q mdle;bpso the right 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 ,emek(p0;i*8qdsb lvcar 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 initiau.q;85w5d bwe/x gwj2*z9lj/xmn dxxlly moves to the right 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 * jdxed5;z/.8gu9 xlmqbw w5wnx/x j2is 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 qp) uzypi*1 p6x0 xa y1(cts3gconstant 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 ini )0 trmu r:khyu7qx.k1tially is moving upward while in free fall. Which one of theu 1 humky7:k)0.qtr xr following choices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right cq5o bl exm;nt0),/ 5*u;qw ly w(tzfvnompletes 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 mullt(q owm 0 e;),*nxtq/zuvn5 ywf 5;bst the object have during the 8.0 seconds of stage II?

  15.32: An object moving along a line completes a 20.0 second trip wit-ta,5n n5-ki23 zu d w2yfqtjkh an average speed of 10.0 m/s in two stages. During stage 1, the object mo,zn- d52nufa ky5i qjwk -23ttves 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 dropped from restb lc+(x9b8ne 2deai/nc 2 9u klf/p-pg. A ball is launched straight downward with an initial speed of 36 m/s at a time 2.10 s aftebe/ kccf 2bllnn p-+/ 2dg8(ieu99pax r 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 roa;ogxq2 nar-q6d, a self-driving car races with a robot. The robot accelerates araq2 g;nq6xo-t $8.50\;m/s^2$ 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 positkq7*tfm( ,uit0+ uurd ion of the ball 0.70 s after release is the same as its vertical position 4.10 s after its release. At what timu0i7mqru ( t*dk+fu,te is the object first at a vertical position that is one-half of the maximum height it obtains during its flight?