94.01: Starting from rest, object 1 falls freely for 4.0 secj+qqcw0*:rn ul p i;t+onds, and object 2 falls freely for 8.0 secondc0q:tj *i;r++u qp nlws. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final speed ofov* v p3o479v q5 tpgwbvrb36 vy0)keso gf+b. 20.0 m/s in a time of 15.0 s. How far does the car travel duriv pprygveo. 6ov)q+ v05vs 7t3 g9b bok*43fbwng this time?

  94.03: A ball is thrown off a high cliff with no horizont1k syc wj:2l zj1,6aznal velocity. It lands 6.0 s la 6lzw 11cn2:jjy,sazkter with a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is accelerating verticall 8qm;l+c,);i ma9lyr kv *uypxy upward a m*8;+)ic,vmr;lu lyyk 9paqxt $10\;m/s^2$. 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 in4-8cjfgb x(e9xaoz/ ustant. If it continues to fall, one second later the object would be moving withxjfg/ax9z u8b -c4e(o a downward velocity closest to:

  95.39: A car starts from rest and acceler,k,eg h 2jiqv xxmc12g4+ms0uates 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 w8al7+)jn b-k o1 ch,avp:irb nith a speed of 30 m/s. Assume air resistance can be ignored. The height of the building n-) 7cai8nkobb,h p+jv rl:a1 is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/s in t2j,7 b2 kgd,s7sefjqf p4*bc uhe upward direction. What is the approximate velocity of*k gjf,psjed,bb2s27 4qf 7u c the object one second later?

  98.14: How long must ayw h8dnl55 (;3 o1ultzsrgzq. $2.5\;m/s^2$ 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 movinm63vcqi 6d7vhaf vud zveq3b w-:n( 2:b8j-kng downward at 18 m/s. If it continues to fall, two seconds later the object wonjem6hvbqu2dd 6v-(kn3cf 7 :8bi :z vvq3a -wuld be moving with a speed of

  17.02: A small object is released fcnae7 8n ex+yhu+d 84wrom rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground from which87+edx ea +n8hynwc4u the object was released?

  11.06: A ball of mass =0.100 kg is launched straigpi*o ulefeyh:2fc +) ,q t;g3uht 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 choice3f+ ig eu yhc*fo2 qpl,eu;:)ts 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 lau;:ieh (k6p*78bcxtcu v h ud)jnched straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much timxdi cc u j:pkhve*)t;(b 67u8he does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plane has speed 0.40 m/s tv.;c7 h jq8kqg g5tos1wo seconds after it begins to sqvc5jo q;8 kst1hgg.7 lide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward)ch2 wz9apj-o from the top of a 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. Assume-o2aphz c9j) w 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 s2 7w vf,lz6wuiam 6lfud//oq 0peed of another, how mul6 dm 7zfi 0/fvu62wao,uq/wlch higher will it be at its apex?

  02.30: A box falls to the ground from a delivery truck traveling at /+elgz uis82m 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box ui8smez2l+ g/to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/s nea55r n 4id),a24o wjbh gfzgfs*r the surface of the earth. After two seconds what w)insbhwfoa4gdfr* zj 2g,554 ould be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thd-g9ct w7cv. frown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rag-9w.7tccdvf nk from high to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight upward with idenw2knro1hbmc 3i j+; o9tical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If object 2 has j m1wcrohki+n23b9o; mass 2M, what is its maximum attained height above the launch point in terms of H ?

  04.28: A rubber ball bounc 4 i/o4edqecj-,;lc h(y/gaivc -hkam8hzi,8es 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 fi adoa/cc egm4yj;kh8i el/,i(4qc-zhh,v-8 i rst and second bounce was 1 second, what would be the time between the second and third bounce?

  16.21: At 1.94 s after launvb. e; yd1s.ptd.xt- th9hx k6ch, a projectile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectiley-xhh;te .9k dvt 1.dtbp.sx6 ’s initial angle of launch from the horizontal?

  05.02: A pebble is dro:zy-jdlj q .o8hg uz99ioy, 8apped from 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 the ground? Ignore air resistanj8zly-9 o :jzh,di9 gqu.o8ayce.

  06.03: Three students were arguing ab umiy8vvq kxba7h+2ti q w769*out 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 thvwkta 7 mqhu * b87xvy+q9i2i6e 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 3phvm+z t.zbd(a3 vr tr1e.4g ohf+2hx0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system, the signs of the initial position, initial ve3t+rv b1haf +4rv3p.( me.zdho 2tz hglocity and acceleration, respectively, are

  04.38: A small point-likem1zcdl, sp92z object 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 point B. Assume that in changins91z2m p ,zcldg 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 tower. Half a y4;s qnb tgw4y6wi.8 eybkzz:ojc .6;second later anothe6y; s wjwbgq.ny8tkoye; z4bc z4. :i6r rock, twice as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 mcq8v:e;xp b*u9jr:sdw;6v y t/s along a track. The cart comes to rest after traveling 1*q86p9cxvret;sjw d;y: :b uv 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?

  07.11: A cart is initially moving at 0.5 m :h2 kvgqfl() m9zg:3dti2ztp/s along a track. The cart comes to rest after tra2 vgdl2:mqz9(:tz3g thi) fpkveling 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 fqv / 1zpt4.ddfrom rest and runs in a straight line with a constant acceleration tdfd4p /.1vz qof 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 wy /sanwg3 z)tzp zrx/x8(xof0 0*bx *without air resistance from a height h above txxz0/p8s3tgwowy bx r0x)/z (fa**znhe ground. 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 and unirxfflv :/y 40em pi,2lformly accelerate to the right. At time t=0,the objects are at the same initial position. Object 1 has initial speed twice that virl/mxf lpf:4e0 2y,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 thrown horizont ,47fpid+pqav,e:is oally 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 choices best represents the time of the object’s flight t 4 7,ipfq,ivped :+oaso the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The object remains in free w yeqod- 0n,7dfall until it returns to its initial launch point. Which one of the following graphs could represent the velocity of the object as a function of timedq-ne y, 70owd during its flight?

  14.03: An object is dropped into / )iwjf1) k0*qpmgg8wstq3o9ogy dl/free fall. Through how many meters does the object fall durq kf/)1qw ltgoywd jig0 8go3)ps/9m *ing the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a fla- wu9+rx4v1fvp- zd,mqm) s 42ivxupz t surface in a time of 12.0 s. What was the initial speed of the box when it started p4+pqx4 wz u-)fxi2v z9- uvrm 1ds,mvits slide?

  14.07: Starting from rest, a cart uniformly accelez/fk gpncq1fl: 8 1,,l cnk9gvrates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does the car 8fl9 kgfk,gcp,1:v/nlqncz1 t move in this time?

  14.16: A toy car initially moves to the right at 60.0 + y.h ( /5i5-hvjddhgc dqv0ekcm/s. Five seconds later, the car is moving at 40.0 cm/s to the left. The total d5 khydhc/(ig - qdjveh0. 5+vdisplacement 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 ff07tx k2j rq0/da;lxright 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 is 10.0 cm to the left of where it started. Which one of th q07rtx/ 2ajkd;xflf0e following choices best represents the magnitude of the average acceleration of the car during the five second motion?

  14.33: An object moves wf*+1ueg vv)wy ith constant 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 initially is moving upward while in free falq ;vo 53uk *y::okmugabq-eg7l. Which one of the followinge;g7 ok q3-5bkyau :qgo u*m:v choices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 second trip ,*3f- j+ gre6gcz)dmlz3(ff0b k jqkdin two stages, I and I-l qbk,f)e(fmj63*zcz0d+d kg jf g3rI. 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 of stage II?

  15.32: An object moving along a line completes a 20.0 seco om7-7h(iiflknd trip with an average speed of 10.0 -i kh7(i 7lomfm/s in two stages. During stage 1, the object 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 dropped from rest. A ball is dj bscj90 e,b1nui+ -dlaunched straight downward with an initial speed of 36 m/s at a tid-01d b +ncs jui,ejb9me 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. The a xch gacjaarl74( *r48kf l;m m,6t(qrobot accelerates a7ag6*(8a(c 4h mjalmtql r4,fcar;kxt $8.50\;m/s^2$ 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 camnb.o 9h 9.x ti)zc2position 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 maximumhca). b cinmtxz 2o99. height it obtains during its flight?