94.01: Starting from95s+hf2 liiy3x oh at6 rest, object 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, obfliha 2s35ix6t +9ohy ject 2 falls:

  94.02: A car starts frxkssaq 5)zw xf7t3qaxn,7t l-:v)b-r om rest 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 dul3fr7ws-txxszq tkxa)q ,7-v5 b :n) aring this time?

  94.03: A ball is thrown off a high cliff nz0zl3g o 1/edwith no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial velocity of the balo3dez 1n0 /gzll?

  95.27: A rocket near the surface of the earth is acceleratid(qb pe .7vrx;7tz2f( rtsy.i ng vertically upward at 2r. bq s7t7rx( dzy.tfp (v;ei$10\;m/s^2$. 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 on8gi: .;2,2objxif t8zc( jgs yrh d(jze instant. If it continues to fall, one second later the object wouldiio,grc8(;22 jtd.8(j h zjgy:xzbf s be moving with a downward velocity closest to:

  95.39: A car starts from rest and accelerates atec,rp :lo 4x:--3yrj(jmi pqh $0.80\;m/s^2$ 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 groft4hzredgn:;7 l/-ouat5e 2y*7zcy mund with a speed of 30 m/s. Assume air resistance can be ignored. The height oyc :y4/rage5t2n hz7d m -* to;ezfu7lf the building is approximately:

  97.09: At a certain time, an object in free fall has velocitj) djh/c+t bn6y 4.0 m/s in the upward direction. What is the approximate velocity of the object one second latc/ 6+hd jnbj)ter?

  98.14: How long must a)g0 odq;tuz x-8xwmc-pq h(3r 0ipq5 g $2.5\;m/s^2$ 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 dtroe2fp 14l5aownward at 18 m/s. If it ce2po 1 5rlfa4tontinues 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 freel( yq)pq1ed 6uey for 4.00 s until reaching the ground. What was the height above the ground froq( )u y1peed6qm which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so that it risw)6 zia4humj h u5-gh)es to a maximum height of 12.0 m above the launch point. Ignore air resistance. When the ball reaches its ma) ) 5hhwg-auihuzj6 m4ximum 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 straight upward so t5 lzo 7oxdvrm0bc1 9shhq9d4po+,*hohat it rises to a maximum height of 12.0 m above the launch point. Imdh,sbd xq5 o47o+1p*h9vr zoho9l c0gnore air resistance. Approximately how much time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inc-a5uz64qs wi / a*xxetlined plane has speed 0.40 m/s two seconds a5/6xza*ux4 t was-iqefter it begins 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 tower 5:z8pui h e/z2ygyj8ex8 srtd6 3ped/ with a speed of 15 m/s. Coin I2gdyuh5 :pyp8idzj 3e/ 68 zstxe8er/I 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 u6b5c ;ifpo3g.ysbl j)pwards with twice the initial speed of another, how much higher will it be at its apex 3fbjibo6;5l ys)gpc.?

  02.30: A box falls to 2 .2 ohbgnps-ym+ nmg*the ground from a delivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest.+-p2nsm yog2mg.*b hn 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 the8f 7fd2mm1gwe.om4sg surface of the earth. After two seconds what woul2o1f4ge ds.m wf8m7mgd be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different masorh lj0909 zoes (1m, 2m& 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocitoz0hjloe0r 9 9y of each stone. Rank from high to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are qqbk 07-fyvbz o.5b8;,nvjezlaunched straight upward with identical linear momentum5z,zy8kj b n-oe q0fvbq7;vb .. 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 of H ?

  04.28: A rubber ball bou4 1n-5nji6a tas1few*8 dghip 7g fth5nces 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 bounce was 1 second, what would be the time between the second and third bouna14isjedpf15ta *g8 n h5i-h wg67nt fce?

  16.21: At 1.94 s after launch, a p8.gjp, yej(9l d lb 6s)i 9g;v+yigxyorojectile in free fall achieved its minimum speed durvijxyli,g8l9 6sgd)o9 yyb.j+ (;g peing 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 dropped from a high vertical cliff. The colbo.wet nl4ye m9;(5bulision of the pebble wiolbu.m 4n ewy9be 5t(;th 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 0mwxn7g. nl 13d+mdti 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 the top and time the fall of the tennis balls. If the time for the tn gi0w+mxl.mn d 3d17ball to fall was 1.4 seconds, approximately how tall is the parking garage?

  05.07: A snail is movom 5ev(rz 6sa5aie* 4ming along a straight 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 po*o ( srme5 a4a6iezmv5sition, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled downwards by gravity (down thet5d.,ll cop7 r 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 chap,.c 7o tld5rlnging direction that there is no loss of energy and that it takes negligible time.

  06.13: A rock is dropped from the top qy.raylmy 8(*of a tall tower. Half a second later another rock, twice as massive as the first, *my .a 8lr(yyqis dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The carn g-dfj 4*mh5ht comes 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 before coming -h4jf5 dhgm* nto rest?

  07.11: A cart is initially opkz3pvz6w:f -yx/j 9moving at 0.5 m/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track,-zzwv3kjpy9p6:xof / 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 with ax 9+u 4cl/muth constant acceleratim/u4hltu+9xc on 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 resis3:ygxlm mp8r7z* .ir 0kj ria wuo3k*;tance from a height h above the ground. If the ball falls the first distance 0.5h in a time t, how much time is0zkl*i* aioukj w7rrgy8x3m.3p: ; rm required to fall the remaining distance of 0.5h?

  10.38: Two objects both movc1r;. imanssdah 3h;,om5 ,yj e and uniformly accelerate to the right. At time t=0,the objects are at ts5r ai,hnd3 ;1 ;h smaojmyc.,he 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 Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizontally with speed 108b+ w.: n6gy t2.zatoxs,elm f.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 to the groun. tgxb :lszm+2ewt8. yo6,na fd? Ignore air resistance.

  13.10: An object is thrown straight upward. The object remains in free fall unbc :fe7k0jj,dml 4 y3ftil it returns to its initial launch point. Which one of the following graphs could represent the velocity of the object as a function of time during its037fjld mbk 4cyjfe,: flight?

  14.03: An object is dropped into free fall. )gkre: q7q gyjuz,6*y Through how many meters does the object fall during the first 3.00 seconds oqy,eqy*7r)zkj: ug6gf flight?

  15.02: A box uniformly slides 7.50 m to rest acros9+1jn9rae egage qv fk7u3ewp,.ay25s a flat surface in a time of 12.0 s. What wasrn9 7gu e5y3agw+ 92p .a 1,jfeaeevkq the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 7.60 3 okld3aft,v3t )w1ogm/s in a time of 3.00 s. Through what distance dv k1d)3, lwtg3f o3otaoes the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. gvp +-b(zc hvxv l)8 hr29*ofhFive seconds later, the car is moving at 40.0 cm/s to the left. The total displacement of the carrfp vxhvhv2h (lo9z8)*+g- cb 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 atj0:zepk0ct2zymph (0 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 the following choices best represents the magnitude of the average acceleration of the car during the five seconjez0 0m:khtppz cy(02 d motion?

  14.33: An object moves with constant acceleration starting with velocifd:*vmpo c6q gsf q,5 p)2wb1xty $v_0 = 5.00\;m/s$ 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 upwardo(o d56po 0ph,i-kaf8 veno,) t(ubpf while in free fall. Which one of the following choices best represents the direction of the obepndku5oaov )-ifp,foh (pb t0 6o( ,8ject’s acceleration during its flight?

  13.26: An object moving only to the right j44o,s jin s/xe o/ mm-di2w8icompletes 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 t sesoij8ni/xwj2dm/ m ,4i4o-he object have during the 8.0 seconds of stage II?

  15.32: An object moving 9gpaxx-b 5g y1along a line completes a 20.0 second trip with an average speed of 10.0 m/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 acceax g-bx5y p1g9leration 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 baliiyc,mm ,z u.42(w ulhl is launched straight downward with an initial speed of 3 u ,h(iy4u cz.w2mmli,6 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 the rock?

  16.36: On a straight road, a self-driving car rap m+2 u 1.h vym2psq,1hpjblt-ces with a robot. The robot acceler,2l2+.vpqu1mhb1-psj ht py mates 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 verticaycv (haf-r4 jxn86w 9gl 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 maximum height it obtains during its flight?ajnhy8 c4fgvx6(9r - w