94.01: Starting from rest, object 1 falls freely for 4.0 seconds, and object 0k/,lp9n5: ah srqps l2 falls freelypsasl,lr9/ qk :pn5h0 for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final speed of *zqsv0gx1 uyn2t b5e120.0 m/s in a time of 15.0 s. How fa5n*sb qzex 1vg 21ut0yr does the car travel during this time?

  94.03: A ball is thrown off,vh(q6cbo:wr i g m.z: a 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 the bi(vb qo,mg z.:wcrh6:all?

  95.27: A rocket near the surface of the eaip,u80 m .eav* wgmr4 6sbfs6trth is accelerating vertically upward av m8m0gbe6a.f*rs 6 ,ptu4sw it $10\;m/s^2$. 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 downwardspp 1g;qh*uy0j at 27 m/s at one instant. If it continues to fall, one seconh*p;j0p qy 1ugd later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and acc7ws akfu)y-;sap k 45delerates 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+giu vt7es1 ,htoh0p6 top of a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored.1h 7g+ph60,vo i teust The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity q s *;l2gm1ree4.0 m/s in the upward direction. What is the approximate velocity of the object one second l1emsrg ql *e2;ater?

  98.14: How long must aqgie -b3y .nv:f 85vcw $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling object zmna9u ,.e9bu is found to be moving downward at 18 m/s. If it continues to fall, two seconds later the9e9b n, zmuau. object would be moving with a speed of

  17.02: A small object is released from rest and )fwwqq t 5mic88nx gjhv+be,m w49 j5/falls freely for 4.00 s until reaching the ground. What was the height abc q t5weg 5hbnj+i wwx)8mmf48j/qv,9 ove the ground from which the object was released?

  11.06: A ball of mas tnw6;4jyvs l+4snsz1 s =0.100 kg is launched straight 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 s 4+wsyzstlj n4 vn16;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 st*,wv py(64qgcra6wvmns79y r j:;bobu3t 0aeraight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately ho*tn9 7vjogacw pwmy(, b6r 30;e6vb4 s qrau:yw much time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined dqjsj,c;,xs1w (z 3pvplane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does it travel in three ssd1x,sj, z (c pjw;vq3econds?

  98.40: Coin I is thrown upward from the top of a 100-m tower with a -wut udbjar3lc-) ih-kc ( d6+speed of 15 m/s. Coin II is dropped (zeroa3l6djkb u+) cdw-c(-hu- rti 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 upwar ss1 vudvms 2os(sjl45 zz 6g)+atmq)1ds with twice the initial speed of another, how much higher will it be as ds(zuossj1)smlz2 6 5qg +v )m14atvt its apex?

  02.30: A box falls to thce1f rl3 u8gtard5 :+le ground from a delivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take thucr tl3g1fe+5:dr8l ae box to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/s near the so6bcpe k b2zj2 j6c91gurface of the earth. After two seconds what would be the dig6pokjb6bz2c19 c 2 jerection of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vertically upward n,g j11s j(:srdwbhos2:*ciawith different velocities (1v, 2v& 3v respectively). The diagram indicates the mas 1b*njisascs 2(r:dh ,j o:g1ws 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 are launched straight upward with idxvq (*p76yk5 ehsu;uientical 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 the launch point in terms of5;(ipkhv uu x*6yes7q H ?

  04.28: A rubber ball bounces on tmmt;j+hbiys ;v* x z-6 w1wku+he 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 mb1s;mhxzk6+wjt+i -;vu *wy 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 achimx. o /u0;*jbaxnlu q7i- l4tgj-; htxeved its minimum speed dlgx*ut7 qho0bi-j/ nau .4;jl ;t -mxxuring 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.nc eluz(s6vfv*g:q /,z;tnamiq /ur th3t1 7 collision of the pebble with the ground below is seen 1.50 seconds a7qttna g 6 uci ezz/fqu,*:(; /vs13t mn.hrvlfter the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were.e +f4sb ;hbbz arguing about 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 bab. z fbeh4s;+bll to fall was 1.4 seconds, approximately how tall is the parking garage?

  05.07: A snail is movwdif ( lcl7)q7ing 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 position, initial velocity and acce c7f(lw qdl7)ileration, respectively, are

  04.38: A small point-j 46 pywl7nw5z9u/ra nlike 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 changing direction that there is no loss of energy46p a7y/ n9z lwurjwn5 and that it takes negligible time.

  06.13: A rock is dropped from the top of a tall tower. Half a see1m26(igjs v kcond later another rock, twice as massive as the first, is droppeg (ke21v mjs6id. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a bi3mj .or5p j:track. The cart comes to rest after traveling 1 m. mpbij5 o 3.jr: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 rej avesqvut9 v)c(64oj(xn t4ar ; /yg*st after traveling 1 m. The experiment is repeated on the sam 6n4ugq/4t)9j*vc v(yasv(xrejt o; a e 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 with a conk6475xxll of2w ufvw 1,pjx7wstant acceler ko5 wfv2uwflxp71wx6, 4 7jlxation 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 cz)h , ze4,asxwithout 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 e,h s4z)c ,zaxrequired to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerate to the/y :k r*ddjyx/axdmv+/c,r) h right. At time t=0,the ob va/d:kyx)r/ryj*h/,x d+ c dmjects 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 Object 2 to that traveled by Object 1?

  12.26: An object is thro+,p i8n1h +oljsktu8fwn horizontally with speed 10.0 m/s from a height H above the ground. The object 8+p t 1knfoj8su,li +hreaches 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 ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The omut.:v dr6z*t1 4 ntckbject remains in free fall until it returns to its initial launchzvmk:6* r4udt nt1.ct point. Which one of the following 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. iz. 6dgfj8mqo7hza h*5ty8(t Through how many meters does the obje 5ghq6(iotz7.hmj8 ay8fz dt *ct fall during the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a fla.:8tq8qj g kvrt surface in a time of 12.0 s. What was the initial speed of the box when it stavjq8gkq8 t: r.rted its slide?

  14.07: Starting from rest, a ca+kz5 htna( /iz bm df)5.0gabjrt uniformly accelerates to a speed of 7.60 m/s in a time ofij d/a(5.gzf+0bta zk5m ) bhn 3.00 s. Through what distance does the cart move in this time?

  14.16: A toy car initially moves to the 1en993 je ( rekm9acipright 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 tim em9cjp9 k1ra9in3ee( e 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 initiall4zq.ty. s1af 6s)/sw2 niktxxy 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 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 duytwssafitq..)kn x 2/x1z 4s6ring the five second motion?

  14.33: An object moves with constant acceleration startie9v4,z o9rrkns8d zp7 ng 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 upwai2*3 uxi0 l494 k5l9:nnt6 ddst xin: vbqatxzrd while in free fall. Which one of the following choicesxt tdn9b62qd:4snv 4i k:a5lxi x ln*u03zt i9 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 s0 ak2sr.x9buaecond trip in two stages, I and II. The average speed9xarus 0ab.2 k 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 second trip wio7q1vb/m9 y4 tagh u5vth an average speed of 10.075bt1/v4mgy q a9h vou 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 have during the 8.0 seconds of stage 2?

  13.33: At the top of a high cliff, a smazt8wuh 7 /r/sqll 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 28.0 m further than the initq/hz w7s8tur /ially dropped rock, what is the speed of the ball relative to the rock?

  16.36: On a straight road, a self gmdlo3u ;x9s--driving car races with a robot. The robot accelerates atdos9mgxl ;-u3 $8.50\;m/s^2$ 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 r.erl c)gb.xh:9ic:y vertically upward. The vertical position of the ball 0.70 s after release is the same as its vertical position 4.10 s after it 9.c gcbhi.y:e)rxl: rs 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?