94.01: Starting from rest, object 1 falls freely for -v1hjak ,/xtw)-h 0 (dgzagny 4.0 seconds, and object 2 falls freely for 8.0 seconds. Cdzka(ax-0 tj-)n gw/ 1hh,ygvompared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly acceleraogzcd7, v ua r2s +7kh3(.bw m4eibad*tes to a final speed of 20.0 m/s in a time of 153 dwosma2.c a*ih7zebk rg 74(vu,+bd.0 s. How far does the car travel during this time?

  94.03: A ball is thrown off a highsy 0 :yqe+cer2 cliff with no horizontal velocity. It lands 6.0 s later with a2es+y:qry ec0 velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the susiy+3pwx+bs54 jn7i sp *;b /tm(xl ksrface of the earth is accelerating vertically upward aj ln7p(bi; sb+p*5sx ti msyx34+wsk/t $10\;m/s^2$. 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 downwar* bb3 eef:-mx jqnjoh ,r,/5iyds at 27 m/s at one instant. If it continues to fall, one second later the object would be moving with a downward velocity closestoj j:xb eyr-,* b5n3i /qfhem, to:

  95.39: A car starts from rest and acceabwd di0p kliod 9*k0;n3lz)m r83+ehlerates 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 jfuwr,+ / )l:t ci0pdythe top of a building strikes the ground with a sypctr:0 , j lfwi)/u+dpeed of 30 m/s. Assume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in d8d1ctjuoqd) bk- s,3free fall has velocity 4.0 m/s in the upward direction. What is the approximate velocitkdot 8qu-db3cd,)j 1s y of the object one second later?

  98.14: How long must4zl b3k:+dldr 0dq .vm 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 moving downward at 18 xo 8 k)afh-*ebm/s. If it continue8)hax*ef-b ko s to fall, two seconds later the object would be moving with a speed of

  17.02: A small object is released frvmc 98te47ftu/ytyic 0o2k- dom rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground from which the 42-90k yic oftvemct7 8/udytobject was released?

  11.06: A ball of mass =0.100 /yed 9 ztq9z*z;1t-ociaev p.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 the net force acting on the z-t;z c tv 9qy91eieo*p.d/a zball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 kg is l8jfzl9sxci+meqk,*c) s; t:6l qu- zkaunched straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how i 8 6scxue :)zmjsfqlk ,k*9+t -ql;zcmuch time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plane has speefbyz r4 .-2uyrd 0.40 m/s two seconds after it begins to slide. Approximately how far does it travf4.r zy- uby2rel in three seconds?

  98.40: Coin I is thrown upward from the to(2p o-h 3cyzkpp of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the towepz( h-cp 2o3ykr 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 upwards with twice t;qj)v ubch- th0t nzg 5d )*9pag.rpq7he initial speed of another, how much higher will it be at its apgj vqn)r97gab hh*;d5tc)p.z u q- 0ptex?

  02.30: A box falls to the ground from a delyp8 l9trpsc0 ezd89u u:d +,fpivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. 08f9dc+ul d8zrp9tu eys pp:, How long does it take the box to come to rest?

  03.29: An object is throwb372xqqr u f ez0cjr.,ttc/l, n upwards with a velocity of 30 m/s near the surface of the earthq0e3urb x7j ,tc t,r/fq .lz2c. After two seconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) mu(qpd9g1.;b ab5c,x9 rpx bpare thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diag.51a q(g;x m, dpcb9rubpp bx9ram 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 are launched straight upward with identical linear momem6xd30vxuv ;g+hmhg0 ntum. 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 th3+x0;m mvg ud h6h0vgxe launch point in terms of H ?

  04.28: A rubber ball bounces on the ground as shown.g i8syy-x: u.w After each bounce, the ball reaches one-half the height of iyy-8.:uwxg s 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 projectile in r.mw4.-,s un q-leemnfree fall achieved its minimum speed during flight. If thate4ns--mw.eurq m ln ,. 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 am9+upxz g1 ii3h4 m,gq high vertical cliff. The collision of the pebble with the ground belowhu gpi 9,gm 3+4iqxzm1 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 argb-8) sx;5/sniqgti oquing 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 ball to fall was 1.4 seconds, approximately how tall is the p)s8igns5 ; i-/tqoqbxarking garage?

  05.07: A snail is moving along a straight line.hs2np 7 xxq3x)z*e, so 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 acceleration, respec x2s)xqzn,hpoe*s 37xtively, are

  04.38: A small point-like object is pulled downwards by gravity (down the3b1zas40esso4d6m1 q+ vjt *p/rdkof plane of the page) but is constrained to exactly follow each of the frictionless pathways shown. Rank thesess+4kfo d eq4j 6r odp1mv31z*0/bast 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 energy and that it takes negligible time.

  06.13: A rock is dropped fromu1aqx42e : 9vrom*3mb2 xsei /m i(k k9biu4xx the top of a tall tower. Half a second later another rock, twice as massive as t2qv*ax ukmxk4mieub o 12b:e4i m 3sxi(r/x99 he first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. Tlfu+ybzz n3v ort o. j-u;u1.2he cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but n o; bzzurunty.j1 v+2 3ou.l-fow 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 tracknw q w2mis22z0. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is initia iznm2qw2 0sw2lly moving at 1 m/s. How far does the cart travel before coming to rest?

  08.03: A dog starts fzfrqqcm6 un4(z)y c :;rom rest and runs in a straight line with a constant acceleration orq4m qn; uf (zc6cyz):f 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 atioiyaz2)0fwg r8jj 94 rest falls without air resistance from a height h above the ground. Ifj40 )aizyfwr9o2g i8 j 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 uniformly accelerate tojjem )c 30b8ry the right. At time t=0,the objects are at the same initial position. Object 1 has initial speed twice that of Object 2; Objeer03)byc j8mjct 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 10.0 m/s from a he4 6t nxyte/l1eight 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 th6txn /ye4let1 e object’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The object remains in free w juqdi)d*5 a*fall until it returns to its initial launch point. Which one of the following graphs could represent the velocity of thw j da)*id5uq*e object as a function of time during its flight?

  14.03: An object is dropped into free fall. Tt68:cbsrqlyq oe /c*1) y3khf 7 ,dbswhrough how many meters does the object fall during the first 3.00 seconds of fliow)6* s,teqrl kq1bb/yc fd3c8h s:7y ght?

  15.02: A box uniformly slides 7.50 m to rest acww)mzgbh c+d)ns5/noywc;f9 z w64 w1 ross a flat surface in a time of 12.0 w zw;wbhy)zcmond6wn1 9 fs)/wc 5+ 4gs. What was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart iqxpk8r 7x8g+rm:,;)g nqt6yo w udz5 uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does the cart move in ir8uzng7xw:mt5g, yk 68d+ )rpqx ;qothis time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Fivea*76f dk/q vwt 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 tok a qt*w/fvd76 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/s. Five seclh)y-yy4 u0hs5ptsu /rc1 rs t(v7u.nonds 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 accernp5-su uth ( ty lhsu sc.0r1)/yy7v4leration of the car during the five second motion?

  14.33: An object moves with constant acceleration starting with velocit;yxy1c bxdx.4r0 h(5xhz+zud hs -va4y $v_0 = 5.00\;m/s$ 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 fall. Whichcckx t/g+bn,*1e;w bo one of the following choices best represents the direction of the object’s /gb*1okwcnb, ;ex+tc acceleration during its flight?

  13.26: An object moving only to the right completes a 20:lsl39u9xj qg7 ssn qu1 c9qe0.0 second trip in two stages, I and II. The average speed of the enscgl9s9uq 3091xqlse :jnqu7 tire 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 mov47mu.x jb39jmm+lz n21l xk4cx yt s)ding along 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 acceleration dirxmu)l 1.4j +3c2sdnb 74 j mlzkxmt9yxected to the left must the object have during the 8.0 seconds of stage 2?

  13.33: At the top of a high cv7.na;xr ,5tzp dh)pr liff, 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 28.0 m further than the,hztd 5rp .xpa ;v)n7r 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 ro59lhseg7 xqmmqm8oe9 ;zq/ *ubot. The robot accelerates at e9 mlh9m;qmu7gzq x8*s5o/q e$8.50\;m/s^2$ 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 bah w4:moghw ( xqem8b8(ll 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 verticm h(g8xw : hoq4m8be(wal position that is one-half of the maximum height it obtains during its flight?