94.01: Starting from r1w8wgi 2iu;u6jjsk( t ju)/jl 7t a0c a;hor5oest, object 1 falls freely for 4.0 seconds, and object 2 falls f1 /jw0jcku ;jla6w(t ;oa 2u gu5t h8so)jri7ireely for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly acd0scr 6k si;r//go ;bvcelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far does ts/ igbd;ror60 kc ;/svhe car travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal ve.7o:cx4 on vif++ykv mlocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial velocity of thyocx +n4v vm:k+i o.f7e ball?

  95.27: A rocket near the surface of the earth is.xd.c2*b ,aadc9,nu :wrrczx accelerating vertically upward ar. ccxwcd zu9ra:,x* n,a b2.dt $10\;m/s^2$. 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 27 m/q75ou l-yxrq*-ao8 mr (w0jik t:rl/xs at one instant. If it continues to fall, one second later the object would be m-/5* -7 lw rm j(oux:r8k0oiylqtxqraoving with a downward velocity closest to:

  95.39: A car starts from yduko5z j vh:9;(3f l onh)+lorest 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 strikes the gr k uqgjt57yw9 /ooac0;ound with a speed of 30 m/s.o7tgy5;0 /wc a9ojuqk Assume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity36ofl7t-bmfzkdu 4k3 4.0 m/s in the upward direction. What is the approximate velocity of the object onfu 7t3kkd3 m6o-fb zl4e second later?

  98.14: How long musta0qg6( pf( lmt uy785*oaaxdg 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 e8s 5wy24qfcxuklo- 0object is found to be moving downward at 18 m/s. If it continues to fall, two seconds later the object would be ck -0u fw28o54seqxly moving with a speed of

  17.02: A small objectzczv jz +y7x78 is released from rest and falls freely for 4.00 s until reaching the ground. What was the v j8z yx7z7z+cheight above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so that it n1la7eed4hbr0c g u )9rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. When the ball reaches4au7hb d 09egerc1n)l 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 /8m,m7oxhdal2,r/k . fusgruis launched straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resirl 8a,msd/mr.fukg ox2/ h,7ustance. Approximately how much time does it take the ball to reach the maximum height from its launch?

  98.31: An object slidin- lehn .,*wfjvg down an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does it travel in three seco,.-jf nvhw *lends?

  98.40: Coin I is thrown upward from the top of 3/. q :ijo1zkt jhqbh4a 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 s later. Assume g is 31hkzh.ji bqj/: qt4o$10 \; m/s^2$. How far below the top of the tower does coin I pass coin II?

  02.04: If a ball is thro5jk 8z:skxg8 zfo ey(.wn directly upwards with twice the initial speed of anot 58y zf.exjk(:8gozskher, how much higher will it be at its apex?

  02.30: A box falls to the ground from a delivery truck9ukf(2uj seoam6h9 9pj 1os 6jje.9j n traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take (j 9 2hjko66m j9j9apes u 1fjne.ou9sthe box to come to rest?

  03.29: An object is thrown upwards with aro7j5+bu 9hu z velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, velocity and aczu+j oh75ub9rceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3mmp f 0d+c qwmaj89nhs8t226tx) are thrown vertically upward with 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. Ass9n0 mq8hc82dswaxtpf 62+m jtume air resistance is negligible.

  10.25: Two point objects are launched stragf 8cuh),; -/aad9qn(eaev faduo( u 7ight upward 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 heean8 u7-cuafd(,/gdqfuh oa(a e9)v; ight above the launch point in terms of H ?

  04.28: A rubber ball bounces on the ground as shown. After each bo.+dhh92leva+z(t9dn i uw b4y unce, the ball reaches one-half the height of the bounce before it. w+ea4bd.uy9d9ih nz2 lh( +tv 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 second and third bounce?

  16.21: At 1.94 s after launch, a projec+spp0 f wdlrxv0.n83w1fum: hdls*ldyq ,r :-tile in free fall achieved its minimum speed during flsfm00dlwdy rs-rqpl*w h31:u ldf vp ,. n8+:xight. 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 dropped from a high vertical cliff. *f lsmz3z4q.p5vo 1svThe collision of the pebble with the ground bef1*vqz5 vlo3s z. s4mplow is seen 1.50 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 2.je cn lntc1:ce 9 hhf4n0m/yparking garage. 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, approxima ch/h4c mlntc0.1 eefj29nn:ytely how tall is the parking garage?

  05.07: A snail is moving along a straight line. shhj7zbvwxy y/5 f4* 9Its initial position is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system /y5zy9b4 jfvsx*wh7 h, 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 planem,5l ;rwev3y k of the page) but is constrained to exactly follow each of the frictionless pathways shown.l 5ywev3 mrk,; 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 negligible time.

  06.13: A rock is dropped from the top of a tall tower. Half a secon,j;ae-0hw e pdv(l+xud later another rock, twice as massive as the first, is dropped. Ignoring air resi(p0, exul; w+ jea-hvdstance,

  06.18: A cart is initially movingsbxz nb*89 x7mo n,i92/oevh 0dfo ,va 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, bn hx9/0,9me,*28f dvi xvs zoon bboa7ut 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 a track. The cart comkik-au.fz(0u,g,wumtw vb u e qn;1*)es to rest after traveling 1 m. The em,w, a1; n.*(gt bw0uuuufie) z -kqvkxperiment 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?

  08.03: A dog starts from rest and runs in a straighvpuabap 1816z cxtdl4.5 . jhzt line with a constant accele51x6z tvpzja bpu.ld.h148ca ration 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 fallmq;mru.md kr/5o4-aa s without air resistance from a height h above the ground. If the ball falls the first distance 0.5h in a time t, how much time is require4d.omumk arr/ -; qm5ad to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerate to t2f/rl f.fdqcfdy/ 8d2 g f/ak0he 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 2. After some timeff2k8f/ 0d. arf2dfq/d /clyg 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 .qg 4 w c9r,x8tmoebt)a height H above the ground. The object reaches the b xw4ocm.q r9)tt ge8,ground with a speed 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 objdjtxv;a 4mn23c3kj z1ect 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 function of time during idk3 zxa2cm; n1vjt3j4ts flight?

  14.03: An object is dropped into free fall. Th ng (b3pcj,-2ck svfz:rough how many meters does the object fall during the first 3.00 cp,z2fk s-vgjn c(b: 3seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a v8h9lufz d+ 9iflat surface in a time of 12.0 s. What was 99i8zuflvdh+ the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed onle. (xtj ai,0f 7.60 m/s in a time ofla, nt0e.j i(x 3.00 s. Through what distance does the cart move in this time?

  14.16: A toy car initially moves to t0u3ulmp3n w 1fhe 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 represents the magnitude of the average vf0un1mw 3ul3p elocity of the car during the five second motion?

  14.17: A toy car initially moves to the right at 60.0 cm/s. Fivkyx ;a wo/d*t5q *l-ure 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 q**tlyo 5x/dar-u ;kwmagnitude of the average acceleration of the car during the five second motion?

  14.33: An object moves with c n23tbx2,utxa onstant 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 x3 dya8hrze0-h6 3isvis moving upward while in free fall. Which one of the following 3zia-03ey86rx h hdsvchoices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 2bt4r+;nwuyhjwe/8gc g zh 8i2). b)la0.0 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 obj cr4w8)+;ela.tg gw n i/8 b)yu2jbhzhect have during the 8.0 seconds of stage II?

  15.32: An object moving az4sp bw8ti,h 3long a line completes 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 directed to the left must the object have durip8zh 3,t 4wbsing the 8.0 seconds of stage 2?

  13.33: At the top of a high cliff, a icqp:5usk8 u7small rock is dropped from rest. A ball is launched straight downward witk is cuq:7pu85h 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 with a robot. The robot x(l*oc2pgin y 5aw3s (accelwn lc(xs2g* i 35ya(operates 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 launc+o at5qhey,4ghed vertically upward. The vertical position of the ball 0.70 s after release is the same as its vertical posoqe, t 5+y4ghaition 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 during its flight?