94.01: Starting from rest, oa:jo 0j22yn:d6p ch h; ,gujajbject 1 falls freely for 4.0 seconds, and object 2 falls freely fopja2:j0j;n , c:h2ohya jgd u6r 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final8vuxmxr) ep*9/ 0dvhw speed of 20.090eup vdmvxxr)h 8w*/ m/s in a time of 15.0 s. How far does the car travel during this time?

  94.03: A ball is thrown off a high c-e0px (xhx pd-liff with no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the inxxppe(xh-d0- itial velocity of the ball?

  95.27: A rocket near the surface of t5:hqq)k rkxh bu3d48hhe earth is accelerating vertically upward hq d 4rqh x8:)5bh3ukkat $10\;m/s^2$. 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 a++ igkw/8lzpw-gc hg0t 27 m/s at one instant. If it continues to fall, one second latei -h+gzlg0k/g cww+p8 r the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and acce+zru m9-d oji80/ur fblerates 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 f6xi:eahh1dt1qe46 ko vzl 4q *rom the top of a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. T*h1d1 :eozlvx 66ke4 4taqqhihe height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0h2 e +cs.82aelf;gt lt m/s in the upward direction. What is the approximate velocity of the object one second later?tfll a. 2;gese+hc82t

  98.14: How long must a i .uz*y x02 ;7oumhbry6.jpz 0edxhk4$2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling objeq5;hyjl*lq, phq//u bct is found to be moving downward at 18 m/s. If it coyq//5*ujl plb h, qh;qntinues 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 freely cbt;q )*h )emsns.;t9xw k *uhfor 4.00 s until reachi;whbt*q;h *n9m)t) kx.sscueng the ground. What was the height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is l -tsr o8b(pcko. g;wxmbi58u*aunched straight upward so that it rises to a maximumxpw8;ok* .bg(8 -bsu5oc mitr 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 ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 kg is launched+ zu7j gug43z3y yu7va straight upward so that it rises to a maximum height of 12.0 m above the launch point. Igga7uu 33y4gz+vuj 7 zynore air resistance. Approximately how much time does it take the ball to reach the maximum height from its launch?

  98.31: An object sli6qi z+pi*j*hy raj (n2ding down an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approxima j pi +zqr(n6yi2a*hj*tely how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the toxay7m)kd 3 h*8w 6fascp of a 100-m tower with a speed of 15 m/s. Coin II is dropped (y)h8k*dw6ac3 x sfam7 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 upwards with twicrcy62tw2pbg:+v 1m fq e the initial speed of another, how much higher will it be at 2v :gyb t+w61fpcq 2rmits apex?

  02.30: A box falls to the ground from a deg308bm:kd*8 .: ufhkho itkvn ha+o3ulivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it to:k0 .uhb8gk hf3n: uvk8h mt*i+o3daake the box to come to rest?

  03.29: An object is thrown upw1 pfyo. f 2w ,lg9kppsu,,p6zyards with a velocity of 30 m/s near the surface of thpsly 16wzk , p.9, 2pffpuo,yge earth. 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) are thrown vertic.l gmt4 5m*k qp+q 5qbuyt*ul8ally upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank from high to q* tmqpkbg.mu 4l+yt 8u5 l*5qlow the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight upw n1 s,ek,eiwxkys48)jard with identical 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 termiwkxs ,1ee)n, j 8sk4ys of H ?

  04.28: A rubber ball bounces on the ground as shown. After w c+wbcvugv:oj6e 3( ;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 was 1 second, what would be the time between thgvu +cw v o(:w3cj;6bee second and third bounce?

  16.21: At 1.94 s afteav5.5-afv bj)eero+rq *9ibb r launch, a projectile in free fall achieved its minimum speed during flight. If that minimbq befe9 *v -+r rvja)55ib.oaum 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 collision of the * ssyx0immk qj oevf502w+11 ppebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what spee1e0mj* y+5mv2fss 0qw oik p1xd did the pebble hit the ground? Ignore air resistance.

  06.03: Three studentshd,i d xlb-2k, were arguing about the height of a parking garage. One student suggested that to determine the height of the garage, they sib2,h-lx d ikd,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 ak*8qt2ye(ygo h p/hu f*-wc v(qyt )2klong a straight line. Its initial position is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate syy2(2hq*tw-y 8y*kuvf (koq he/cg)pt stem, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like h -n2kd7o48rth: xsys4- zyjx 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 energy and that it takes negsnsyh- dth7r42y8 ox4 xk -jz:ligible time.

  06.13: A rock is dropped from the tx +o8id6t;o dpg,)oed i1d,u cop of a tall tower. Half a second later another rock, twice as massdp8,;iog o61 dc tdude)x, io+ive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The c9lao6i) p*i 2lb0ptes h61 kwuart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is initiallyo 0al6e)b 96klpi2*p1wshui t 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 avg-vc 7nxxwr)h)nrh ib,, e-0long a 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 )70n)ev x r,h-w x,gnrhcbi-v 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 shenpuap4,3hu/y2 ws25u:1gnfx k zz7traight line with a constant accelerat:g5akhnx23z y4zuwp s17pf,h2uu/ n eion 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 abdlqx1.;sha: lf-;n9:w rawbo ove the ground. If the ball falls the first distance 0.5h in a time t, how m; wallbfrsa qw:h;d 1-:n.ox9uch time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerate to the right. At time t=3e (n24 jibq,h9qet vz0,the objects are at the same initial position. Object 1 has initial speed twice that of Object 2; Object 1 has one-half the jtvz e(i43,q2 eb hn9qacceleration 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 horizontallvk*dom:06 v8bvz t 2qly 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 vldm6q0o2b v:*z8tvk time of the object’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown straightn36jugdy*x,9sv c 5sj upward. The object remains in free fall untix js6*ngd 9y35 uv,jcsl it returns to its initial launch 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. Through how manbj af 0 y7cv(62api+jly meters does the object fall during the first 3.00 sj0j6lp i7(vacb y2fa+econds of flight?

  15.02: A box uniformly slides 7.50 m to rest acro)qs(r2;:g vgi :skl fbss a flat surface in a time of 12.0 s. What w v(gr:q ifb;:gls )2skas the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly :u) 4 htanqwg52 92t:h qy4w(k heqdkfaccelerates to a speed of 7.60 m/s in a time of 3.gk) au2qw4yhe (4qh h2f9 :5kdn q:twt00 s. Through what distance does the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five seconds laa3+ 5lg6v it:5ghwif5cht )ti ter, 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 ifgc:v haw5+ht5tig6)53i lt 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/cex-ahp/x zvyq6 1kfk3 ,-7eus. Five seconds later, the car is moving at 40.0 cm/s to the lef6e 1v ah-ky-3x zcu,p/ef7q kxt. 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 accele.(c zo th2yz0k)ag;yrration 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 initiall .oo:z-6 4rr1ztfpotruf *y5 oy is moving upward while in free fall. Which one of the following choices best represents the direction of the object’s acceleration durf1rptu:t6yo*o.4 oforrz5- z ing its flight?

  13.26: An object moving only to the right completxyfo3de8 -g0fes 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.d-g3e8fxyof0 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 completvvj(*xp yt6 ;ces 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 directedv;x*t vyj (c6p 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 smalll hw*n7 .zwj;zo fazf;y00ds / rock is dropped from rest. A ball is la7/0 zl zf0z* owfhsya;wn d;.junched 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 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 wbft9qw1t6* m1 ax w91dkyk3ayith a robot. The robot accele1a1 yq*wmwkkxdb3 f y9tt a961rates 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 vertic kbf+3heft 6-qally upward. 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 isht3f-q 6fe k+b the object first at a vertical position that is one-half of the maximum height it obtains during its flight?