94.01: Starting from rest, object 1 falls freely for 4mzi8us.j wp5b-w3t 3a .0 seconds, and object 2 falls freely for 8.tba .3spm 3j5wwui8- z0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from cll a 0 a*wuii(k7r+q:rest and uniformly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How farq(kic7 war *iu:0la+l does the car travel during this time?

  94.03: A ball is thrown off a high cliff with tilgx1 (std ,qq- u580te,z f:j1uzaano horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial velocity of the bal(:-xflu1t, d8gqu,0 qiza z tst5 aj1el?

  95.27: A rocket near the surface of the earth is acck/ ti-: qc1)7fwywh ,ozaeu *jelerating vertically upward ajo 1y 7-e: h,wkazt/fwqui*)c 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 b)a,jt3f(j8u wj(t j xsblk j,4e moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be moving with a downward vel(ajl3wuxjjtsk) t4 ,, b 8f(jjocity closest to:

  95.39: A car starts from rest and acch7y. a+e2 kba+ .xkvfbelerates 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 stri44azl 0yc id-vkes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of the building is approximaydv- 4zli 0c4ately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/s*,bl/o*oo9qoxk5 x tg in the upward direction. Wh/o ox *ok,lb5q*tg o9xat is the approximate velocity of the object one second later?

  98.14: How long must w7 j18 lqyx :isz)a3iwa $2.5\;m/s^2$ 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 movinat2(m g/ b-rnh-k/tvtg downward at 18 m/s. If it continues to fall, two seconds later the object would be moving with a r -tk-mahg/btt2v n/( speed of

  17.02: A small object is released from rest and falls freely for 4.00 s until reo;-l, jyn md+:.*r gz)y:mmp r sso0dcaching the ground. What was the heighg:yj mr; dly m*.)n0dso+zc:p m-,sort above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is lmm-vx 7e /, eo1 fnp/dt*embl*aunched straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistanp*d1n - ,/vfxmee t*om 7m/blece. 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 strae(s0rfv6t; ql7 e7sqr.r re1light upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much time does srf lq1 e7 7s6(rv.;re0erltqit take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plab4pc01:clwayqm,b. ncow 9r 3ne has speed 0.40 m/s two seconds after iba0mplc w3c ,9 w n.bocr41q:yt begins to slide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from thep 1lo1xhp);ryi s8i4 m top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initiam4isixl 1poy) 8;1h rpl 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 upwards with twice the initial spv/ae44t r)e woeed of another, how much higher will it be at its apex?4arw)tev/4e o

  02.30: A box falls to the ground from a delil7 f qurpjjiz5*9w01by*4z opvery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box to co*479zprbzlp ouw i qj0y15*fjme to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/s neard rb+.ae)m)*kshveq6 oy9whn*,5 z d qdn2vg7 the surface of the earth. After two seconds what would be the direction of the displacement, velocity and accelerg+dd*.q e 9e2vv wkob)7)znqa5sh * hr6nym,dation?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thry,-ikvma:gl)4hkb 46vn-xu gown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank from high to low the maximumuvb -x6y)a:4gv k ,-n4gklihm height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight upward with identical lpeccj- 8 vxl*8inear momentum. Object 1 has mass M and reaches a maximum height H above the launch poin p8jc x8e*-cvlt. 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 bounces on the ground as5br 8q*j w6h*l8f ltoqu hrgzpm33+a. shown. After each bounce, the ball reaches one-half the height of the bounce before it. If the ti*w3r*+gob.uzlrhfj lqm83hp8 6 a t 5qme 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/*- 1 oirwv-bsstf(ja launch, a projectile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launch from the horizontal?jws-sb o i vatf-(/r*1

  05.02: A pebble is droppe/c sx5/4ej;6in en4wy nrir)yd from a high vertical cliff. The collision of the pebble with the ground below is seen 1.50 seconyrxi4n/cesnij 5/r4) 6n;w yeds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguinmo*z uir/y5( xg about the height of a parking garage. One student suggem5xuy/*ro( z isted 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 parking garage?

  05.07: A snail is moving alon2va: p z zkc)9pt*6eang a straight line. Its initial position is x0 = -5 meters and it is moving away fro ez2c 9t:vna)*6pzakpm the origin and slowing 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 gqt)moos3gjik 9/: wd(ravity (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 trk so)t9jomdg( q3w/:iavel 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 i h7pzztjxqinb.7/.. x-vd5 iu;x6v n from the top of a tall tower. Half a second later another rock, twice as massive as the first, is droppej6xi7i;7hbtxv i.q nvz5/.-zunpxd. d. Ignoring air resistance,

  06.18: A cart is initially moving ats wcxub:2e* aoa*b)i3u 9j8d k 0.5 m/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is initi3sxe) kuad82o bb*ci9w:* aujally moving at 1 m/s. How far does the cart travel before coming to rest?

  07.11: A cart is initiallvkqjl..v s bl/(4v w)4c+moyc y moving at 0.5 m/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the sa4v bck (v/jy lcsq.lmv+. )4wome 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 wi 3 aql*ch 1qmoey3w-6 n+5d/ggzj8ha constant acceleration1j635 eq3wcghn8mw*d+agoy/ hl - zqi 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 af eaj9ny(-lcm 3hnzc q1it 164t rest falls without air resistance from a height h above the ground. I1al i3c 1fymnhn9ej4c6 t-(qz f 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 9 ua10u(ssi,;wcs/3o vjyyr naccelerate to the right. At time t=0,the oyny(1us uswi3o j0 cs/9a; vr,bjects 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 thrown horizont*tl6txsi-j98ur ;p l nally 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 to the ground? Ignore air resisr-u lpi*n98x;6ttjsltance.

  13.10: An object is thrown straight upward. The object rpfn:e8/th uk j 114 lqvkjc4w;emains in free fall until it returns to its initial launch point. Which one of the following graphs could represent the velocity of the objec4: 18q4jjf kv1cwl e/npthu ;kt as a function of time during its flight?

  14.03: An object is dropped into free fall. Through how many meters does thks rs/fq5zjmv 99)*d,blupt+ e object fall during the first 3.00 seu9tsjl5,q/ b +s9k)dp mf*vrzconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface in a otlbnkw,/ z*,qnfa / /time of 12.0 s. What was the initial speed of the box when it started/* ot,/nl,qfkb/wnz a its slide?

  14.07: Starting from rest, a cart h (er4-j16dh tq7mkeycc5ftm r:o 5. nuniformly accelerates to a speed of 7.60 m/s in a time omr(-h7n.ho5f6ctemy 4k5de ct j :1rq f 3.00 s. Through what distance does the cart move in this time?

  14.16: A toy car initially moves to thfvzra/i j5la(4 om y/xm 3qs3j:g 54wfe 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 st53l/ mfj3ivf4wm a5 z(a:jry g/qsxo4arted. 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 r ybex6 ht2p/1i z2he,:m7sioeight 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 o i2/b,:e7yhx h etmsi z6e12pof the average acceleration of the car during the five second motion?

  14.33: An object moves with constant accelerat1 ak o)zdhvg6r2q5 an/ion 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 fall. Which on- 0bjqky,cr 6dfvb:h6e of the following choices best represents the direction of the object’s acceleration during ic6k,j q0- 6vrdfh :bybts flight?

  13.26: An object moving only to the right completes b/ f7ym6ox*xe8f i4dja 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 the object have during tey*x8/ji4 f6fo7x bmd he 8.0 seconds of stage II?

  15.32: An object moving along a li 6x+5ycd 6gh: iyvacsq/;pqe/ne 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 di;+pc s65c qy gyx:/vaq/ehi6drected 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 fromyl34owf 6v1jid:m uo+n(ja2 u rest. A ball is launched straight downward wa34mo(ouly6u1 j:inv dj+w f2 ith 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 road, a self-dxapu ):js, zy2g,3pw vriving car races with a robot. The robot accelerates at pgpxsu2,,vajy: z)3w $8.50\;m/s^2$ 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 of9ahe0vfu302m3 budsp 6lt -xw 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 dur3ep0dh3f-09tuwaxs2 l6b mvu ing its flight?