94.01: Starting from rest, object 1 falls freely for 4.0 secsv 2t*5/-m(;b8flswm r.ft*l vipqvronds, and object 2 falls freely for 8.0 seconds. Compared tovb(-;* vrr*llt52pst .qfmwf 8/msi v object 1, object 2 falls:

  94.02: A car starts from 1zyan5. 2gvb krest and uniformly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far dovy n5.k2za1 gbes the car travel during this time?

  94.03: A ball is thrown off a high cliff withj; aphfo,- ec3i 3aid6 no horizontal velocity. It lands 6h afci;iepj6a,od-3 3 .0 s later with a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of thwy1xwjyk rd+ 0 6f+/lve earth is accelerating vertically upward +ly/+w j0 r1 fkv6dxywat $10\;m/s^2$. 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 an/i1b3g i ;hdebwp77o t one instant. If it continues to fall, one second latbih/ 3; n eo717ibwgdper the object would be moving with a downward velocity closest to:

  95.39: A car starts from resut 82vfmkkqsu, 1*,kfkzrf0, t and accelerates 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 o r;i rj5qw)gv8f a building strikes the ground with a speed of 30 mr v;i)5jr 8gwq/s. Assume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/s in the uptr* mmutlxchz /d)., 2ward direction. What is the approximate velocity of the object onz 2/)thm*,xud. ctmlre second later?

  98.14: How long mustkz kmcqk +04dn.2;s cx6a ag0s 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 fallio tr* s+o5wgm)7y) qhkng object is found to be moving downward at 18 m/s. If it continues to fall, s5om )qk*)7rtw+h gyotwo seconds later the object would be moving with a speed of

  17.02: A small object is released from rest and falls freely for 4k -2grqigs5;f.00 s until reaching the ground. What was the height above the gror k-if sg2q5;gund from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so that it rises to r5v nxz:k9)pm a maximum height of 12.0 m5nr)9 vpxk:z 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 straight upward so that it risext,s zv f+/ 3w)o64oaqj +kwrms to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much time does it take thet j)o wzvqr/6 w4mxa,3f++kso ball to reach the maximum height from its launch?

  98.31: An object sliding dl aih+2 -qc-ylz9c)fv own an inclined plane has speed 0.40 m/s two seconds after itaq9 zcf-l-2vy )l+ch i begins to slide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 12(d -kfb*imue00-m tower with a speed of 15 m/s. Coin II is dropped (zero m* du fei-2(bkinitial 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 upwi3;zedl6q)nm,b ran/, na w2hards with twice the initial speed of another, how much higher will it be at its apex a)arzqem,6n/ dn3win,bl ; 2h?

  02.30: A box falls to the ground from a delivery truck travxd;yc72qw lat i 0 fk;qw60dhlt1 5)hgeling at 30 m/s. After hitting the road, it slides 45 meters to rest. How ;;6)d0hq xdygack5hw0 q12 f7lttilw long does it take the box to come to rest?

  03.29: An object is thrown upwards with a velocit-baxb (kgm1m9y of 30 m/s near the surface of the earth. After two seconds what would be the direction of 1 9-bax(gmk mbthe displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown verticall2g y+umhy8rr 8ua ,gyqk26kj/y upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stoneu, /r2y8h8 y+yajkrmg q62kgu. Rank from high to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point obj,cswpe dtc0 /-76ktzsects are 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 height above tc,z/ tde-s cpsw k076the launch point in terms of H ?

  04.28: A rubber ball bounces on the g8lwdi a18 2gqwk l8 fjtve()h9round as shown. After each bounce, the ball reaches one-half the height of the b1jwq8ltl a )hv wk828(9idgf eounce 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 projectile in free fall achievsaao .d j-y,-1lj aw;xed its minimum speed during flight. If that minimum speed was 15.0 m/s, what d -l,ysxo1a.jaw j-a ;was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The ceb1sq 3c x:1og0 0 vqdb8e epysk0:q+dollision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. W 1:+y 8qv:ed3k00qe1 sqbdgbs px0coeith what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing sc.w 9v 4zoim7about the height of a parking garage. One student suggested that to determine the height of the garage, they si sz74c. voiwm9mply 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 initial position is xj svh (3pvfgxsc;)u* 80 = -5 meters and it is moving away from the origin and slow *hvc( fs;p8 3svxgj)uing down. 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 gravi,qi6 gd;; g c5fhl:jpity (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) necessarfc;6dli5hg:g i, q jp;y 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 a tall tower. Half a secodk*o:/lah r3 ind later another rock, t ho* k/3ari:ldwice as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s alonq2h3jg7i rjm 2g a track. The cart comes to rest after trgi 732q2mr jjhaveling 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?

  07.11: A cart is initially moving at 0.5 m/s along a track. The cart comes to ysf(mgm xrl r(ba82/3w ) 7tykrest after traveling 1 m. The expek mb3x8l2/(ft ry)7gyr msaw(riment 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 andhmq84a c-bku2 runs in a straight line with a constant acceleration o24qmahu8 -k bcf 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 resq qkqmty6u:gx85 0 vbn ,5.hjhistance from a height h above the ground. If the ball falls the first distanc:qgjbh q 6 mhxu0.vtyq 5,k5n8e 0.5h in a time t, how much time is required to fall the remaining distance of 0.5h?

  10.38: Two objects b.m;x fg7i tpx7v*,ealoth move 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 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 Omfgivle.*t x; 7,p7xa bject 2 to that traveled by Object 1?

  12.26: An object is thrown horizontally with speed 10.0 m/s from a hp9szy+8 . e82aguy nteeight H above the ground. The object reaches the ground with a speed oft9z8.p+syu8eneg 2a y 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 remainx6jckmfq/rn+u qa)(oq4c.:ge shsbol65 0q 1 s in free fall 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 tia4cs5oj+/flqb s0g1:o6ux (q) q cqh6m.rnekme during its flight?

  14.03: An object is dropped)fu ita ;pg0l/ into free fall. Through how many meters does the object fall du/i pu g;)ta0flring the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50bb7a)c ;a 2lom m to rest across a flat surface in a time of 12.0 s. What was the initial speed of the bocb )ma2blao; 7x when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 7.6 ;rcfs5(mcf*44 fkv dr0 m/s in a time of 3.00 s. Through what distance does the cart move in this timefk ms;5 rd4 rfcc(fv4*?

  14.16: A toy car initially moves to the right atrx . -vl1lr .wu;fg-edlqd55r 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 choixd .r-.l5luv ;dfg1 e-rlrqw5ces 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/s..: j 7ynvp5b3;csgg:.sr tmbz 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 o.b5n cpg3b7 svjgz ym:s;r.t:f the average acceleration of the car during the five second motion?

  14.33: An object moves wikvs)mfq*2n -pj* w tq9th 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 whilex ndu eg0ns26- in free fall. Which one of the following ce6-xn2 g dn0suhoices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right ck-6vj ir7 2-3 vngoettompletes 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 constr3i-n7vejt ok6v- 2t gant 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 second h(c+/ho.hg/gd i5z wrtrip 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 acceleration directed to the left must the object z5gr gdi(h.wo//hh+chave during the 8.0 seconds of stage 2?

  13.33: At the top of a high c,rfjws7gd0 8 nk3nh:e6 f8km oliff, a small rock is dropped from rest. A ball is launched straight downward d 6n8:mfn wh ek387ofs,0kjgr 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 the rock?

  16.36: On a straight rdh/ 4g subgf38(hhb n7oad, a self-driving car races with a robot. The robot accelerates a3h 7d g8u(/gn4sbhf hbt $8.50\;m/s^2$ 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 launcr y9s )n19amw ,lxdpx0hed vertically upward. The vertical 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)0xy991dra, lm p nxsw that is one-half of the maximum height it obtains during its flight?