94.01: Starting from ref 6)k2 0lgyi*zd.6ltpi)vxmbst, object 1 falls freely for 4.0 seconds, and object 2 falm 2x6zp tkifl.vdb) ig0)*ly6ls freely for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts frxvm) 4(/59ti2b2lhai clrl eu)krk7hom 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 duhkvl457a)tb/umc 22ki l )i e 9x(rhlrring this time?

  94.03: A ball is throw 4.pc4xchhq 8gixq:dloera+ pk -77, nn off a high cliff with no horizontal velocity. It lands 6.0 s later with a velocity oeph4cqoh x kcdq+,:-irn7g7 8l4x ap.f 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth 1x--rt2:z 21dvexr cw)ik .qcjy-f ax is accelerating vertically upward ay1k-1ftv eri:)qj crzx-cx2 w- d.2axt $10\;m/s^2$. 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 *0 dp22nghpbt 27 m/s at one instant. If it continueb 0tn2p pd*2ghs to fall, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and accelerates ap*f/5f m7np 1g9axjf 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 u .m/yqd2v1zw a building strikes the ground with a speed of 30 m/s. Assume air resistance caqvyzd2m/w u. 1n be ignored. The height of the building is approximately:

  97.09: At a certain time, an objeb04ocs70 3m5cll11 k kdo ,tzt cusj8ect in free fall has velocity 4.0 m/s in the upw18do5ls4 mk tcl0kcu b713j escz 0t,oard direction. What is the approximate velocity of the object one second later?

  98.14: How long must /s) 8p2qhnppt,tsm0u 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 tod;;7yt1l71vwl ucj40g ky udn be moving downward at 18 m/s. If it continues to fall, two seconds later the object would gvtu1nl y7udd 0y;k7 4l;1jwcbe moving with a speed of

  17.02: A small object is released from rest and falls freely for 4.00 s un w u73l jhatvs02 : av:t:ifhtnn11zf,til reaching the ground. Whatsuh,ltnh2 :f v11j0tziv3taa7wf : n: was the height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straig1uo x z6l/e:i/6et60 vjmdqfght 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 /d gziu1x0fol qm6/et:v e6j6force acting on the ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 kg is launched strai)*s, et m3 +xaereqap:ght 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 it take the ball to reach the maxim,3)as:traq xmep ee *+um height from its launch?

  98.31: An object sliding down an inclined plane has speed 0.40 m/s two seconds at 5ng ag b71uc-t;stq3fm9+j efter it begins to slide. Approximately how far does it travel in three se7gm+cau1; stn tbf 5e93j-t qgconds?

  98.40: Coin I is thrown upward from the top if0oi( y ,qmr p:u9h e7l)9oecof a 100-m tower with a speed of 15 m/s. lmu) e(yrc h:9i 097i, oefoqpCoin II 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 upwd/8fl+qrongt3 u* : qaards with twice the initial speed of another, how much higher will it be/gn +dol af* ruq8q:3t at its apex?

  02.30: A box falls to the ground from a delivery truck traveling at 30 f+fsug pv+/md5c9l1q m/s. After hitting the road, it slides 45 meters to rest. How long doe5++fdlv u19qgp/c fms s it take the box to come to rest?

  03.29: An object is throwyca*b13g m.fyga9vwl( r; +xaz0 iw u:n upwards with a velocity of 30 m/s near the surface of the earth. Afterzy3rxuwvgcf0 a+ w .y*:a(il;g 91b ma 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) are throz, wy um+ /w444qapwrqwn vertically upward with different velocities (1v, 2v& 3v respectiwq 4wpzywa4u4/+m ,rqvely). The diagram 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 l5zuvau, gt129kcd)cw+ l(andaunched straight upward with identical linear momentum. Object 1 has luk9+, z152tcan(c) awvd g dumass 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 bounces on 1 psh1+rl0 eopogr6 j0*r,c3 .otisgz the ground as shown. After each bounce, the ball reaches one-half the height of the bounce before it. Ifjei1toroc6z s 0rsggr.,*01l+3p hop 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 iz c*qj h6np+u1 ;j(jkyn01qmyn 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 ch*jyj;(1u my qnj6z+0kn1pqlaunch from the horizontal?

  05.02: A pebble is dropped from a high vertixue)g . xn2;brcal cliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the pe2x )grxue.b;n bble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking garage8sjba;hd*8w8dzp qgs:yp8 d-. One student suggested that to determine the height of the garage, they si 8zd: qpsjdy8sb8*;pgdah w 8-mply 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 pqnb*xw0y*plm/ 1z pf+g. d sfm3hu3by3/j8h qosition 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 accelera+13* x qjpy3f bsdgwfh.zh8*0ulm/m b /qn yp3tion, respectively, are

  04.38: A small point-lb q c,+9krjq m4y0u;faike 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 my cbfqk,9uq;r+ a 04jthat 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 second ld ;e, *eef7khyater another rock, twice as massive as the first, is dropped.e*;d7 ,h ekefy Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s alo;y t+n 80cqzosmf:u *dng a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same t ;cdtyo +f:ms08u* zqnrack, 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 -4gd x bxq+nk8q3 c;uea track. The cart 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 ca- c8q+3 x4ubnkg dexq;rt travel before coming to rest?

  08.03: A dog starts from rest f. netwx).bo: w4dj7cand runs in a straight line with a constant accelerx4.n. wwfo:b e7)j dctation 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 resistance from a height h a:n 5;1*y3bju :slhe6o4gtl ol-hkvpibove the ground. If the ball falls the first distance 0.5h in a time t, how much time is required to fall the remaining dista 3;bos-5l4 i:hglu nk6pey ot*:h 1vljnce of 0.5h?

  10.38: Two objects both x d*fl*hw r(b:move and uniformly accelerate to the right. At time t=0,the objects are at the samebf(d*r*wx :hl 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 10.0 m/s from a 15 o 6)3mov,assq /qnden)aozheight H above the ground. The object reaches the ground with a speed zq mo)1/ o nv,on seaqd365sa)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 obj6v ddci72 -evy4gms+nect remains in free fall until it returns to its initial launch point. Which cd7d-ev6m4ysgvi2 n+ 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. Through how mayssm2cg ,f ga82pd38 eny meters does the object fall dgf8sa 8g2ys3pd,ec2 m uring the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a fmm9.p uw 4r.b0x ws6dep6m 9ca-gjysg*n(d4qlat surface in a time of 12.0 s. What was the initial speed of t6ys nxb -m.(caw6 mgug. j90q*d sepp9w4rmd4he box when it started its slide?

  14.07: Starting from rest0gch0z8nd;hx/ zht ,l, a cart 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 th lzzg; d,cxhn 0hh0t/8is time?

  14.16: A toy car initially m hx:;vd5g7hye 6f8d ccxj-p,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 hcf-7 p: e,6j dv ghmdy8c5x;xcm 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 at 60.0 cm/s. Five seconds later,it 34 1fexgk;)zts tb/ 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 f34tt)exi 1/skft gz;bollowing choices best represents the magnitude of the average acceleration of the car during the five second motion?

  14.33: An object moves with coeg+*a0 rsse*xnstant 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 initial+x hn-b z3g(ylly is moving upward while in free fall. Which one of the following choices best represents the direction of the object’s accyhng(x3l + z-beleration during its flight?

  13.26: An object moving only to z:fry4b;ltc0)a jw-dg 5ox ;mthe right completes 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 the object have during the 8.0 seconds of staglrabxo:yg;dt5)f- cj z 4wm 0;e II?

  15.32: An object moving along a line completes a 20.0 second trip with atr ob0*to(lu8 n average speed of 10.0 m/s in two stages. During stage 1, the object moves 0tul8otbr (* owith 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 small rock is dropped from rest. A ba.c27y3qal6nwp. uq*; i on1mlats k1tll is launched straight downward with an initial speed of 36 m/s at a time 2.10 s after th*1p o6m.cq3sniyqa l7 .nt1uaw2ktl;e 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 races with a robo;tvnf4h*s 6tql qs8e6 lb x*m:t. The robot accefl 48q qslt6t* h6m xsen*b:v;lerates 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 upwardb. unc, brbh-jv04nz1. 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 that is vz.bn b-ucn,04h jbr1 one-half of the maximum height it obtains during its flight?