94.01: Starting from rest, object 1 falls freelyra +kcfa*(9p aa(ki o3 for 4.0 seconds, and object 2 falls freely for 8.0 seconds(c +a*aro3a9kif ak(p . Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformlyyx+wqm9a nooy-4d y+* accelerates to a final speed of 20.0 m/9d*y+o4ax+nq y y-mows in a time of 15.0 s. How far does the car travel during this time?

  94.03: A ball is thrown) hhgr9nbk8evj4t 8l7 w;7acz off a high cliff with no horizontal velocity. It lands 6.0 s later with a veloc8; k rv4halb 8c7tjhw7e n9zg)ity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is af2 z r+ky4tg.a 9ben;7)8zju ppwqy: rccelerating vertically upward ag.47zfur8zn ppy9k:ya +j w2 );r tbqet $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is found bd)fg2k2 dv8 ato be moving downwards at 27 m/s at one instant. I2ak)fgbv8 d2 df it continues to fall, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest )ql02wdng -ho 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 dropgie+vf:e tl5 ;eiv- y.ped from the top of a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of the building is approximat l:e yev5 gfe;+-vi.itely:

  97.09: At a certain time, an objz6o l:*o 7 hvxx:.h d1nwmb9fdect in free fall has velocity 4.0 m/s in the upward dlzh79f: h xddmnwxo ovb*16.:irection. What is the approximate velocity of the object one second later?

  98.14: How long must a tzn d86x xh)d9$2.5\;m/s^2$ 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 do,b2bh6 eqcp,gl;jd ,qmu;1 zpwnward at 18 m/s. If it continues to fall, two seconds later the object would be moving with a s1mb, zc;p,2 qbd,h 6 gluqj;pepeed of

  17.02: A small object is r jmwd1z2 npr6;eleased from rest and falls freely for 4.00 s until reaching the ground. What;zmjp n1 r26dw was the height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg io)unqb:wj 9hdif(1g8s launched straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air jn o1u)9h:f(dbqgiw8resistance. 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 straight upward so th//e:i zs bapv (*srv/ t2z r(x0(eolmmat 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 maximum height f a(bom pvm*/rx(e2z:stez//lsvr ( i0rom its launch?

  98.31: An object sliding down an inclined plane has speed 0.40 m/s twl:j e4 jbj,+b8 jeddk4*4 cqtno seconds after it begins to slide. Approximately how f,j q8dj:t*b 4e4jdbl e+jnk4car does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a o+vuwbkt8* ;:ee0f eix 3ufpf9a7d2r100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) fro8*+reu3 f;0fadivf btk7u ewep: o9 2xm 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 initialy*f)*v:gmm)hmd8g en speed of another, how much higher mhe f* nmgmd):)y8v g*will it be at its apex?

  02.30: A box falls to the ground from a delivery tlch 5kh 0;6oyvruck traveling at 30 m/s. After hitting the road, itylo5 6c; khh0v slides 45 meters to rest. How long does it take the box to come to rest?

  03.29: An object is thrown upwards with a vel s3m; 5iqf+jrvocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, velocity and accelerati;5vmq+rf 3jison?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vertsi-r/k p:mb 2wically upward with :irkw- 2sbpm/different velocities (1v, 2v& 3v respectively). 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 objeca hsmf, 40og6ba*ke0its are launched straight upward with identical linear momenab *gmo6he0s, 40kafitum. 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 terms of H ?

  04.28: A rubber ball bounces on the ground as shgizou xha( f8-68 mwk.own. 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 was 1 sw(x8h6 g i.af8mkuzo-econd, what would be the time between the second and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fall achieqf 8 8bcc+gjl,vu e* d902;f3zzy wtlwved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s ijdf,lqu 32 +zfc;l*e8yzbc8 wgtw09v nitial angle of launch from the horizontal?

  05.02: A pebble is dropped from a higx (ocybv v)/l)h vertical 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 pebble hit the ground? Ignore c y()xlovvb)/air resistance.

  06.03: Three students were arguing about the height of a par,pykr k0m jzgxne06- qq0dt **king garage. One student suggested that to determine the height of the garage, they simply had to drop tennj0p-x* m*kkdge0tn r 06 qzq,yis 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 v 0*qz7+s / ykdm,hti(c-ee nva straight line. Its initial position is x0 = -5 meters and it is movin- d7 kn*hv/vy,ceq(st0em+zi g away from 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 gravity (down the et: 34qtj+im8dwryo: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 t woetmtq3dy8j+:4:i rhat there is no loss of energy and that it takes negligible time.

  06.13: A rock is dropped fud4 jjzmx, l810 +1zrghbfy- vrom the top of a tall tower. Half a second later another rock, twi gz-u0,rfjxmz h8yb4 1+djv l1ce as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving a xjb(l vktlw2 :eth693t 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 2 tllwk:9vhj 3bx6e (tnow the cart is initially moving at 1 m/s. How far does the cart travel before coming to rest?

  07.11: A cart is initiau 6xxz1nc d)u9lly moving at 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 initially moving at 1 m/s. How far does the cart trave n x9uc6xd)1zul before coming to rest?

  08.03: A dog starts from rest and runs in a straight ll : -sad7n ltl2x8iw;0ecjr2p ine with a constant accelernrw2ldt;0e a-82 is xljl 7:pcation 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 nn-)qdu.. ejx falls without air resistance from a height h above the ground. If the ball falls the first dista.-d nnu.jq)ex nce 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 to the right. u1fdtt8q1m7csnx7/o 7oy s (hAt 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 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 toxt m77coq 1us 7ohfs/ 81tydn( that traveled by Object 1?

  12.26: An object is thrown horizontally with speed 10.0 m/s from a r392zv jhay9 si 9o2os(zboe7 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 ijry9zozv2973 2o(ob saeh s9the object’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. Thepj0)ekhd);c:kux6 e 1 x)fzlt object remains in free fall until it returns to its initial launch point. Which one of the following graphs could represent the velocity of the object as a functioe:k 1d) upc)jez6lf)khxx0;t n of time during its flight?

  14.03: An object is dropped into free fall. Through how many meters does the7 usz2lwimoed7 g8w h2s .gigf 4/to9kdu+ 9+e object fall during the first 3.00 seconds of flight?982 74ms+t 2 9 /w giheuio.+7 dwdefokgguzsl

  15.02: A box uniformlyw/ 2*tbsav,w*cs8v aa slides 7.50 m to rest across a flat surface in a time of 12.0 s. What was the initial speed 2 ts/cwva**avwb, 8as of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to 6fnj h6z0psx*a speed of 7.60 m/s in a t*px f60zjn6sh ime 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 cm/s. Five seconds latersh.xhve -j8 .a7 euec-, 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 averagese hh a ce-evuj-.x78. velocity of the car during the five second motion?

  14.17: A toy car initially moves to the right at *f+ g8f, 2oi nkbu*3fshav1ci60.0 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 of the average acceleration of the car during the five senf 38kcf ,2+o*asufiv1 b *gihcond motion?

  14.33: An object movj)o.fug g ,2gaes with constant 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 initially is moving upward while in0 )/9uhkoei0 7tl ghurk ;v1yg free fall. Which one of the following 0 u)vloyg/eh1tik krh;u7g09 choices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right cn.6i)amh9g lw* yp3q yompletes 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 olp6y .93ym qnwa hi*)gbject have during the 8.0 seconds of stage II?

  15.32: An object moving along a line completes a 20.0 second trip with an averacks1 n*ujv1 n8 -nds)rge 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 magsdrvujs)n-* kc8 11 nnnitude 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 r h8ai3k:yjxeyi.u2/ nock 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 ih: ike 8.uya3i2n/x jynitially dropped rock, what is the speed of the ball relative to the rock?

  16.36: On a straight road, a self-driving car racesq3n km2.co,2jz/inrm w;rsf1 with a robot. The robot accelerates,rk s nqmn.c1 or23z/;fimjw2 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 position of the ball b :sef nx wyr y)o.a4e8l2k:-m0.70 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-frsl 2bx4k)y ea o8m:e:n.w y the maximum height it obtains during its flight?