94.01: Starting from rest, object 1 falls freel5ymt*otwfi -lrx9 +er /tyj-5y for 4.0 seconds, and object 2 fal y xt 5t-i/fr-9tlemyjw5r* o+ls freely for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts frqctm -m *rra.eszpzp*m0h0z pvhhpdw(7 6 37)om 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 during0t7zh0.z*dvrqphmmc7sme6)* a -(3phrp zpw this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. Iteognl81)*w w t lands 6.0 s later with a velocity of 40 m/s. What 8w*1ngoe )t wlwas the initial velocity of the ball?

  95.27: A rocket near the sur.cmwz c8ps3x(rt 1 )i y1gfpx1face of the earth is accelerating vertically upward att f)w81r3gi.p(szc1 x p1cm yx $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling bodgx -bmpyjtnrt p66j2 7544 kt0 upubq+y is found to be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be moving wit-4bjj k6 tr05gb42u xy+6tqtp nmp7uph a downward velocity closest to:

  95.39: A car starts from rest and acc4kki0fjo08(idpc ekv 7) vb 5eelerates 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 fro0 h9pl bmi/a 7jvhq96m.ym(sdm 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 buildinghd /6avsq9bpi 7mmj(.m 9h l0y is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/s in the up.b09 lx7yizf*kx va z5c* h3rmward rka9zxxiz7 35.* hv myfc*0l bdirection. What is the approximate velocity of the object one second later?

  98.14: How long must -i2nu0 e)ckuzqw, y:ha $2.5\;m/s^2$ 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 18 ms2rgdub h6sv- ot7k; w24v:m j+ef j(b/s. If it continues to fall, two seconds later the objuv6jbs 2j dk4 2vr +wo:g;t sebm-(fh7ect would be moving with a speed of

  17.02: A small object is released from rest and falls freely for 4.009d8ai+doqhw-7da ykd,; y us qha5k5. s until reaching the ground. What was the height above the ground from which , 8k dyyahsd-qwoq.d+5 57 kua diha;9the object was released?

  11.06: A ball of mass =0.100 kg is launcepj1y1etac; 2+v k ljlj -th24hed straight 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 -k j1a 2 y+celhj tj;tp2l1e4vfollowing 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 32xh* r gt .h*yypywkjj973bp upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much time doesbh37. yypxht3j9*j* kgw ry 2p it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plane has speed 0.40 m/s two seco**3efb4xk*w c p 4uglbfb19 tmh9q y1pnds after it begins to slide. Appro*4em phgyt3k9 l ub1wfc9pq 1f4**bb xximately how far does it travel in three seconds?

  98.40: Coin I is thr943 e8w ;sa, /-1f*hj ntpyagmhrgzkaown upward from the top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 ha3;*f-1,g4 h amr/sjak8gtzewp9yn 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 upwatr+v7mq6b;ue tifyk,2 xt ;7w: vklo/rds with twice the initial speed of another, how much higher will it be at its armf;q 2vituvbkw7t kloe /:;6y+ t7x,pex?

  02.30: A box falls to the ground fuv) ,6ypj mzn:rom a delivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box to come to rest?j 6:yp zm)un,v

  03.29: An object is thrown upwards with a velocirh (.8swus zd(ty of 30 m/s near the surface of the earth.wsz.s(hd(8 ru After two seconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of dmd.u,;8fnz3q7 b aitkgqg ;1c ifferent mass (1m, 2m& 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The ngq.u m;cqfgkbizda7 31;8, tdiagram 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 w5w/wjz 7jhd* launched straight upward with identical linear momentum. Object 1 has mass M and reaches a maxim *5w/hwj j7zdwum 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 shown. After each bounceacvespy 8ld344 w-,ua o/0rdh, 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 the s4 lv weu8hy a4opa,0s3-d cd/recond and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fall e u /lpldm9ls)b2-dh* achieved its minimum speed during flight*-le)lbmd/92l pdh su. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dro liv)7ti7z.ex 4 ytr+wpped from a high 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 7t4)lr7 t i.exvzyiw+hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of ae8f0tl:g6.bxb prw+ ,k7h:v jz6rlye parking garage. One student suggested that to determine l867tb.:w vf6rbyh0re lge , :kp+xjzthe 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 along a straight line.r(;0hka 39 5zfpn jmvi Its initial position is x0 = -5 meai09f rvmk;(5n hzpj3ters and it is moving 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 (dow 4e0i.xwrffqyk 6(. bjn 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 objf(e 4.w 0b.yj kxfrqi6ect 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 negligible time.

  06.13: A rock is dropped from the top of a tall tower. Half a second later u ajsve +u+,,uanother rock, twice as massive as the first, is dropped. Ignoring air resistaj us ,,e+vau+unce,

  06.18: A cart is initially moving at 0.5 m/s along a track. The cart/-igbx5 ur kr vbjblk5l0 d*14 comes to rest after traveling 1 m. The experdjvb45 lg bbk0* -il1k/urxr 5iment 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 initially *-b:afp (w c vtsoxzci( .z(1f ea+ll5moving 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 travel before oxlpt(.awezif: 1b(accz fl*(-5sv +coming to rest?

  08.03: A dog starts from reavj9emih)ne4od 07 h:le 3)cgst and runs in a straight line with a constant acceleratiogc4v9: eo)hjdm)30i n eeah7ln 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 rrm+o xwc2 hn)( t)r;znesistance from a height h above the ground. If the ball falls ) notrzx(w2n+)hcr m;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 accelerate to the right. At time t=*:b8 b* ,uklqwbnjlf80,the objects are at the same initial position. Object 1 has initial speed twice that of Object 2bu bnl,*j8lkb:8 qw* f; 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 horizontall hd( )foao h0vd2 o.0 gwvbejwbk2c1+,y 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 th)d + oovg(objh efkah0d10b w2,v c2w.e time of the object’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown stramac( (n a) zjahaln b48i/t8o2ight upward. The 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 ica8blz n8ahoj( /4 t(2m)anaobject as a function of time during its flight?

  14.03: An object is dropped into xga ds6okl w xoa 5q,:5h0/x(rfree fall. Through how many meters does the object fall during the first 3.00 seconds of flight55k0xa,l(dx:h g/x sqw r6o ao?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface in a xr;p6 sz wn;f9time of 12.0 s. What was the9 frz nx;w6;sp initial speed of the box when it started its slide?

  14.07: Starting fromqgfyh0 i ,01c(pp-d bh rest, a cart uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what disthpgc-0q ,bdf(1h0y ip ance does the cart move in this time?

  14.16: A toy car initially moves tole o ozqo.n;5) 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 cm to the left of where it started. Which one of the following choices best represents5q;o .lznoo e) the magnitude of the average velocity of the car during the five second motion?

  14.17: A toy car initially moves tovbej52wif4 qbl7 w -;+)df tvp the right at 60.0 cm/s. Five seconds later, the car is moving at 40.0 cm/s to the left. The total disp ww qdbj7ve fi;lpftbv2)+- 54lacement 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 accelelv xc4yd1 o:-d7ray/z :n d,xdration 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 mov2aw 6xroc 7n4ging upward while in free fall. Which one of the following choices best repres26agow4n rcx7 ents the direction of the object’s acceleration during its flight?

  13.26: An object movy ke4jt7 a:mh+z *pw5sp.j7yding only to the 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. :p4 my.dws 7tejp+ya hj 5*kz7For 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 along a line completes a 20.0 second trip with an averaa 28x52 xvcxtz+oy )ipge 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. Whaa5 v cox2txx)8iyp +z2t 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 y8f9q5ltbu5 w rock 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 initially dropped rock, what is the speed of the ball relatiqf9tw ly 58ub5ve to the rock?

  16.36: On a straight road, a self-driving car races with a robot. The robot yl, z (axf6 ftl78p h9 y p4i7hfd2xyz)fhh(d6accel(ha ild(ftz)d7 9,h4zh x 627fp hpffxy8 6yylerates 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-tfky8ojr 1x30pau6 e 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 thfa6 8op kx1jyu r-30etat is one-half of the maximum height it obtains during its flight?