94.01: Starting from rest, object 1 falls freely for.n;r6xw0lva u.i 5n uag8, tah 4.0 seconds, and object 2 falls freely f hnualtau0a,wv 5r. nix8 .6g;or 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest a,of9g6j.;chu yd hhx+ nd uniformly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car tra;cj d hgxhy uf,.h+69ovel during this time?

  94.03: A ball is thrown off a highjk.bl/t kc:mzgme0f1/ ;4x6w srr; o y cliff with no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the inie0/o4r.:6 sml t jckg1m;z;bf/xr kyw tial velocity of the ball?

  95.27: A rocket near the surface of the earth:9 5i,br2vjtm g k j5h(n)yhth is accelerating vertically upward irnh:h5 b9kgm2jvy,) 5th(jtat $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is foufqeku 1 y sep.k1 ,1c3uz/h8ndnd to be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object woul eehyfpz8uuks,c/d1q3kn1 . 1d be moving with a downward velocity closest to:

  95.39: A car starts from rem 83 ud-9 )et84sj1n)gb ye3bg lskqgnst 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 of a building s( 2tm ijy:tz4btrikes the ground with i:mjt 4z( b2yta speed 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 free fall hk566 dq.epinw1g t.f0 xsoc6bas velocity 4.0 m/s in the upward direction. What is the approxim. npo.c6d fxkiwb6e6t 5g10qsate velocity of the object one second later?

  98.14: How long must k, 2p 1y ylpya6kx6gn: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 1jr7/*( unrwi v8 m/s. If it conti(*7uwrv r i/njnues to fall, two seconds later the object would be moving with a speed of

  17.02: A small object is released from rest and falls freepj13ly 5zs1khly for 4.00 s until reaching the ground. What was the height above the ground from which the object was rphy k35zl 1s1jeleased?

  11.06: A ball of mass =0.100 kg is launched st+ ;tim;c 5 qx8v9jm i4rp 6njp;)t1rllj.hjzh raight 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 tmi6mr5r98lnjh ; tj)i q+hzxjpv ;1.;cpjl4 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 rises tow9u7g*r ff pq3 a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much time does it take thepfw*rf9uq7g 3 ball to reach the maximum height from its launch?

  98.31: An object slidin ) nhqt8gxqg(69dto4/p anh(ug down an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately hopq x dh hn8t6 9nt/og4(qg)u(aw far does it travel in three seconds?

  98.40: Coin I is throw/n9/xzj8d nv-fqj w;s n upward from the top of a 100-m tower with a speed of 15 m/s. Cj//f8n vq-zj;s ndx9woin 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 diree/-ld9p/cbi h* f c/gictly upwards with twice the initial speed of another, how much higher will it be at its ceh/cgi p-f i*d l/b/9apex?

  02.30: A box falls to the ground from a delivery truck travj2ncq n:hj1ilb/drblx0/.s 9qc 6/ rweling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box to2:hbj qqc1. 6i wdrx/c/ r /lnjs9n0bl come to rest?

  03.29: An object is thrown upwards with a veloci7rmi u0z/p .mk ng)hj:ty of 30 m/s near the surface of the earth. After two seconds what wmjug . 0rkz:p)i/h7m nould be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are throw:4 * ys71jghzv .qlvfbc0xz3 tn vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Ra1v3fcq4yglsz jh7b: v 0z.t*xnk 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 mome;g*w 6bwz6iz2q v,ltsntum. 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 launz,i6*bgs2 tlqwz 6vw; ch point in terms of H ?

  04.28: A rubber ball bounceslnogl.89h ek j9btfpr85ho8 :b ,bmew:kl09 j on the 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 second bounce wblwl o8j9hh0e.: o5:jmkl8 rt,8 nfgpekb99b as 1 second, what would be the time between the second and third bounce?

  16.21: At 1.94 s after launch, a projectilcqpp ; wt++aef n61pi6e 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 latf6nppweq; 1pi c+6+aunch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The collision of djs3z-ogt)b 8 the pebble with the ground below is seen 1.5-j8sgd) bo3zt0 seconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking garage. 1 cza9uqmr.w57hm,ws 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 parkiu maq ,sz1h5mwcw .79rng garage?

  05.07: A snail is moving along a straight line. Its initial pokxqg m2 s6dr).d0n.a ssition 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 accen)rs0sk2m6 ..dqaxd g leration, respectively, are

  04.38: A small point-like objgw+18ixzfs (-cg /oldect 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 releasedo+8z d 1fi(x/lwgc- sg 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 second later anots.- wgot6 /yud2trdr6her rock,w6s . ytrt/o6g-rdud 2 twice as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/sns82f xe0 mddq8 d5i/,3b 3kobpp5 vkw,bpba. along a track. The cart comes to rest after traveli,v8ib3o bwfd p, a3s/bq b08m2kx5p5.n dkdpeng 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 iniv .zt:a5nzry* tially moving at 0.5 m/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the s 5rnzta*zv .:yame 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 17scizp34fuwu nl4*lws 1:bn and runs in a straight line with a constant accelera n:l4zf4ubs lp c1*nuiw37 sw1tion 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 amypr7e u/ jc1,t rest falls without air resistance from a height h above the ground. If the ball falls the first distance 0.5h in a time t, how mucy1mu,7r/cpj eh time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and un1odp3p. xb(8,hp ngdoe l/i .biformly 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 pi be.b8ph xn(l /,doop3g.1d2. 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 height Hm :9z m6:7iet2hbr rek 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 r :m2em9k6i h7b:rtzeflight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. Thxt,(huk eri2ytsozwxp 4u-()f b)):w e object remains in free fall until it returns to its initial launch point. Which one of the following ) btiy o( ww2,)p-uh4xx(seur: )kzftgraphs 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 many ab.k r2rrqzf.b,fz-0bz 57js 8mqs y+meters does the object fall dz+ sb 7 b5b0sqz-zjqmfa2. r.,rk f8yruring the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to restqhn *z1;ol ct: across a flat surface in a time of 12.0 :htn1 *clqo ;zs. What was the initial speed of the box when it started its slide?

  14.07: Starting from rest, b-lxl0dxf hx( 7tgn8*a cart uniformly accelerates to a speed of 7.60 m/s in-nx7ll8xdbtfx*0( hg a time of 3.00 s. Through what distance does the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cmb0rv xtau 2:9i/s. Five seconds later, the car is moving at 40.0 cm/s to the left. The total displacement of the ca9xr0v:i u2a btr 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 velocity of the car during the five second motion?

  14.17: A toy car initially moves to them/h r8i zq.p(h right at 60.0 cm/s. Five seconds later, the car is moving at 4 ipz/(hqh.8m r0.0 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 during the five second motion?

  14.33: An object moves with constant acceleratikxw,gz6e3 n 5(jk+q ax6)f trfon 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 mo60)a6ybfghqmy id8 6 (e wq1gjving upward while in free fall. Which one of the following choices best represe dbh8)fe6yg 6 gm60a1qw(yqijnts the direction of the object’s acceleration during its flight?

  13.26: An object moving onls-m rbq8a.1u-j +vrqg /p1 kugy to the right completes a 20.0 second trip in two stages, I and II. 1 a - vrg+-qqprs m.1k8uubjg/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 stage II?

  15.32: An object moving i6l h f kzhrmw5m0uk,7 g+6*v dr9b/voalong a line completes a 20.0 second trip with an average speed ,+khif7rh0d9wzgro6/ bkm u vv*6m l5of 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 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 ball is y ajt1-xiet0)4jjc : claunched straight downward with an initial speed of 36 m/s at a time 2.10 s after the rock was droppeji tt:-a01jecy 4)jxcd. 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 ac i rzkcp,/vh)b d+(njadg80* robot. The robot acceb* zk),dhai jvrpg8 (/ +nccd0lerates 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 upward. The vertical zc; /7qeiqr;9h au n7 g9skv)beh.j0wposition 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 one-half of the maximum height it obtains du;9b)7ricqz. hwv7ukn j0ah/esq9 ; egring its flight?