94.01: Starting from rest, object 1 falls free fo,-- ga9tnholy for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 9 ,-fhognt oa-1, object 2 falls:

  94.02: A car starts from rest z36w9k 9wh6.ciw0vwdk z: 6qjbnaz i. 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 duringh:.9 .w 6nb3 6 kz kzjcazwdi69qwi0wv this time?

  94.03: A ball is thrown off ah nx xcu275imu/j) o3) ndclh0 high cliff with no horizontal velocity. It lands 6.0 s later with a velocity of 4 oxun7dh2)/clu0 ih nc3jxm) 50 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the eat w6tb(04dha vrth is accelerating vertically upward at0tv ah(6 bwdt4 $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is - 8qusz g;-bwvfound to be moving downwards at 27 m/s at one instant. If it continues to falvqws; -8 bzgu-l, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and accele)4zpmtrv) 0 ynr js9 n/gvfg/.rates 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 isma( -*hwwl7 fn.u8 ngh*)rn po dropped from the top of a building strikes the ground with a speed of 30 m/s. Assume air resistancewlw pnh-a)* gnu8 7.h(*nofm r can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fpu243 n4mxohwh5j7h l all has velocity 4.0 m/s in the upward direction. What is the approximate velocity of the om 74pwnhu2hl 3o54 jxhbject one second later?

  98.14: How long must n yqoq-ue v2o7-y0s+f 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 object is found to be movinziz1tp(5/qv o-( oo npg downward at 18 m/s. If it continues t-tzozpio (o / 5(pv1qno 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 4.00 s until n-2chvey rdi11q )ct(g w,h hsw+3w lc+6 ;dakreaching the ground. What was the height above the ground from wc1wh2kqgvhn+wa;+-idrl esw3 1d,y hct 6 c)(hich the object was released?

  11.06: A ball of mass =0.100 kg is launched a.1yjgg b0(nbsj+b5fstraight 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 magnitude of the net force acting on thej +j1(b.5ga ng0bf bsy ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 kg is launched str3l2or bu w7z zlg9( pl.qyi;r*aight 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 ipo*(r3;r 7ilzll 92uqzb wy g.ts launch?

  98.31: An object sliding down an inff v :q3,o+zgkclined plane has speed 0.40 m/s two seconds after it begins to slide. fkqf: , ogvz3+Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of 7o zjl1l2*koq j) 1ceea 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s later. Assumekc1o j *q7)ze2j1olel 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 direaol+* e*vp7w o9 ami4p0vk l2xctly upwards with twice the initial speed of another, how much higher will it be a0 7vol2 vm ilxwk9a+p4*p*oe at its apex?

  02.30: A box falls to the ground from a delivery truck t+d) i 8nxucc ;8n/ehmf*;zh lgraveling at 30 m/s. After hitting the road, it slg)/dclum8+ez* nc;;fhi 8 hnxides 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 surface ofgoymy(d epj6b40f -8g-asny xu 25e)k the earth. After two seconds what would be the direction of the displacement, vel45(2nfg8y-m)go s0u p ejxd- ky eba6yocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vertically uuxvl y( cz;58o4w4 xr( r2rumepward with different velocities (1v, 2v& 3v respectively). The diagra ex54yl roz(rmv8u4ru2(x; cw m indicates the mass and velocity of each stone. Rank from high to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects arhr4r(*rgy8:byxti/ :: /otojueuk )ke launched 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 heigyt o gbutrj/u*/ yx:(8i:4r: erhko)k ht above the launch point in terms of H ?

  04.28: A rubber ball bounces on the ground as sh hw7z:k6vcm*h-i(m owown. After each bounce, the ball reaches one-half the heighm-76 (kh wwi:v*ozhmct 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 be the time between the second and third bounce?

  16.21: At 1.94 s after launch, a projenk +w; x r4ku,hrnpn1.et:gep(y 3h h-xg3t f;ctile in free fall achieved its minimum sp ;ph;e-:ht3 3+wyne.x(n 4gkrpt rhkgx 1fu ,need during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is droppeh-df 9lxoec) 9 wc47 zdb0zd:zd from a high vertical cliff. The collision of the pebble withz )c-o: c9z dz49bf0dlhe d7xw the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of amggre-3v);i awd+xrc6u 2+hz 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 baaz3 r xe mcir6- guwgd)2+h;+vlls. 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 hle:o ;a )fqg lg.dz*w:uu8w8x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system, the signsw:u8.ofu8e:*llqdh ; gwg za) of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like q46em7gi m4t*s(wz/ 8 m xlzzlobject is pulled downwards by gravity (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 poi/mgx 7 q(*zmlmt ei slwzz4486nt 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+diehjoo 9 ayyc-:51j from the top of a tall tower. Half a second later another rock, twice as mass: ie- j19yohcoady+5jive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 8*,p 7oef hpld0.5 m/s along a track. The cart comes to rest after traveling 1 m. The expled ,f 87h*ppoeriment is repeated 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 cartx/jq8sj 91mhiyp9 ln+ comes to restylq/919n+p s xjih j8m 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 coming to rest?

  08.03: A dog starts from rest and runs in a straight line wiu)) pqhdpk +3ith a constant accelerai+pkh)3ud)p q tion 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 5qa:y7cuy5l nfrom 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 remaiy uc55lq a7:nyning distance of 0.5h?

  10.38: Two objects bo;2t owm: twak/th move and uniformly accelerate to the right. At time t=0,the objects are at the sa:wt/t;2mawo kme 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 Object 2 to that traveled by Object 1?

  12.26: An object is t 1jni- edh)0v eubi/3ghrown horizontally with speed 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 of the following 1)bue j3g0/vn eiih -dchoices 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 remains6afv(:)xd7s,hk0g r: mbp. xpuq l7 kk in free fall until it returns to its initial launch point. Which one of the following graphs could represent the velocity of the ob0g7:vp)rux.mdkafp ql, 6 k x(k:h bs7ject as a function of time during its flight?

  14.03: An object is dropped into free fawbp2 fq tq0l;ce )kb;m: v5l(qll. Through how many meters does the object fall d el: q;(bv2q)b ckp0qwlm5f;turing the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to restg(o z1rf5j7be across a flat surface in a time of 12.0 s. Whao7efbzg( 15jr t was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a spe,q . y-fbr(usgj- t/qted of 7.60 m/s in a time of 3.00 s. Through what distance does the cart move in ts(/,jfbt tqrg.yu- -qhis time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five seconds latek yu+co;-v4wzu.a yo )r, the car is mka.coz4 y u u+;w-vo)yoving 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 velocity of the car during the five second motion?

  14.17: A toy car initially moves to the right at 60.0 cm/00x/bk)rclk r 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 choixb0 k0rr/)cl kces best represents the magnitude of the average acceleration of the car during the five second motion?

  14.33: An object moves with constant acceleration start7hi c.b(mf+wfn-xx k -ing 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 initi wy+;uldi o+2y ,vq*7zf dmk)jally is moving upward while in free fall. Which one of the following choices best represents the direction of the object’s 2od du l)vk7,zj;yiywmq+ +*facceleration during its flight?

  13.26: An object moving0v10sgyat /xg only to the 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 object moves with a constant velocg1yg0s a 0txv/ity 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 trip l/))vs12dnv t 8frzciwith an average speed of 10.0 m/s in two stages. During stage 1, the object moves with a constant velo8sni )ltd vz)cf/1vr2city 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 hi2dfgz7 .pc m-vgh 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 after the rock was dropped. When the ball has fallen 28.f2 7 vzmcpd-.g0 m further than the initially dropped rock, what is the speed of the ball relative to the rock?

  16.36: On a straight road, a1*w6phla9jnw, 3bsr t self-driving car races with a robot. The robot accelerates t,1 b s9h*w6l3arj wpnat $8.50\;m/s^2$ 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 bc*ttsm snwz70kt80bn7aa v / 3all 0.70 s 8n t *tb 73 0tsascwmn7av/k0zafter 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 during its flight?