94.01: Starting from rest, ok,p3w 5: xtgqtp6 kyh-bject 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, wy 5q-pxgt :phkt,3k 6object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a finlm(9k/s- dzvv (qozm ;al speed of 20.0 m/s in a time of 15.0 s. How far dmd;lvz (o-(k /vz9qmsoes the car travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. It la,p+x hr m3n(xsnds 6.0 s later with a velocity of 40 m/s. What was the initial veloc,p+x (hr3m sxnity of the ball?

  95.27: A rocket near the surface of the earth is accelerating vertically upw9pknh en/9ejgjb: i8lo 3o +c,ard at c8njipblg:ee, ojnk+o9 3/h9$10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is found tbufa6 o8kkli k48y53 co be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be mobkc43 8a 6k8y5luikofving with a downward velocity closest to:

  95.39: A car starts *8i h-5o7cw pemzsnj ,9up-hvfrom rest 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 fromzk(2 tzewx 0n9 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 buildi t2w9e(xkz nz0ng is approximately:

  97.09: At a certain time, akyi/9g7c/xmt2 a of4( uhybl 4n object in free fall has velocity 4.0 m/s in the upward direction. What is the approxxu /gi4/4ky(aco 2ht7b9lm yfimate velocity of the object one second later?

  98.14: How long must a bq0 j ka5pj 8 -zhz+ouxa1u40o$2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling object i0i apqte 7 4v0zfn+9yls found to be moving downward at 18 m/s. If it continues to fall, two seconds later 9iyn0 0a z v7p+ftqe4lthe object would be moving with a speed of

  17.02: A small object is released n :/sn6 mrlgu;from rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground from whics mlrng; :n6u/h the object was released?

  11.06: A ball of mass =0.100 kg is u 9wk wup tr)lot/ ig-((yg*k*launched 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, wli*rg -9)/yk(uut wptk* wog(hich 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 upwa2la c75kk,;jd ja 1pilrd so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistkj2a pcl1,; jda5li 7kance. Approximately how much time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plane has spr zy9zw. eq3l-eed 0.40 m/s two seconds after it begins to slide. Approximately how far does itr9z.3wlq-z ey travel in three seconds?

  98.40: Coin I is thrown upward ua 3 x*pc1jkf+from the top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero infu 1+3 cxp*akjitial 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 witxn3yb5y-oybc( hu 0y/h twice the initial speed of another, how much higher will it be at its apx0oy-b5 3/nubyc (y hyex?

  02.30: A box falls to the ground from a delivery truck traveling at 30 m/sewchhk8yf 0p ))g.co2 . After hitting the road, it slides 45 meters to rest. Ho)pk2o.c fhy0 8g)cehww long does it take the box to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m bd+ ec(s o;(qqm7ouasc1)p-n /s near the surface of the earth. After two seconds what wouldocq)qc ;1usp7o+m((a- de nsb be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of diffe2lz.ha4g;v1tu hfe ibew;.i5 rent mass (1m, 2m& 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectivela45g12uhwlbz .e;;vi e tf i.hy). 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 objects are launc*-w3 iju)+i-qzuoxmv hed straight upward with identical linear momentum. Object 1 has mawii o)u+jq-xz-mu*v 3ss 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 alm3yuwlfu gt m-;;:8 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 anm:wuaf t; u g-m83yl;ld second bounce was 1 second, what would be the time between the second and third bounce?

  16.21: At 1.94 s after l6ocz ygz6tvxetth s;(9mn(g+q-6 3craunch, a projectile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectilet66;q (co xv y3c+(n g9ez 6-rthgtsmz’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The cq4v wdo aj5fbmxnv/z :l) ,)*collision of the pebble with the5l odwvz*c xj)/q anbmvf,:4) ground below 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 l548 ,tjjpwns a parking 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 tewt, s845p lnjjnnis 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. 5ll9 3zyh*stq Its initial position 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 acceleration, re yhq9 *zl35ltsspectively, are

  04.38: A small point-like object is pulled *8mmv-v/1,o 4xk ylbo6 8om sz2oebctdownwards by gravity (down the plane of the page) but is constrained to exactly follow each of the lekb/soz4c 8, 1xv8*mtmoo 2-6oym vb 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 negligible time.

  06.13: A rock is dropped from twbwpl)+:kaq9/ t(k fthe top of a tall tower. Half a second later another rock, twice as massive as the first, is dropped. Ignoring air re ):w/k (atqf9tlb+ wpksistance,

  06.18: A cart is initially moving at 0.5 m/s along a 0 :xnc/ymm(df 3h6j uctrack. 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 buc m j:x0fc d/y36hmn(efore coming to rest?

  07.11: A cart is initially moving at 0.5 m/s along a track. The cart com3 aqi x*-sz3hyes to rest after traveling 1 m. The experiment is repe xsziy3ha*3 -qated 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 7v-w*c+ug46z v 9os ck kws-qx7d2cq vand runs in a straight line with a constant accelerati-sc vv-g q u7qwc7*s ozkwxc+k 26vd94on 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 resnmqr6 m l ip9a4;,en7q(pjb i4istance from a height h above the ground. (ba4e jn4 lqi7i,np6 mp9r;mq If the ball falls 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 mz)pxh:l - vvm8ove and uniformly accelerate to the right. At time t=0,the objects are at the same initial position. Object 1 has init-v ): pzvmhx8lial 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 to that traveled by Object 1?

  12.26: An object is thr(a* h c42decuu7kreoxqky 5,*own horizontally with speed 10.0 m/s from a height H above the ground. The object reaches the ground with ao4* c7dku(qkye2hce,ax *u r5 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 thr 2-pw g,t t y2v/tp(i;tzegy8zown straight upward. The object remains in free fall until it returns to its initial launch point. Which one of the folez yzgy,2;(-wpt2/ it vt8tg plowing graphs could represent the velocity of the object as a function of time during its flight?

  14.03: An object is dro8; e9macov 7cfpped into free fall. Through how many meters does the obje7v9 m8o caf;ecct fall during the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat8indo *5(krw q surface in a time of 12.0 s. Wkor n5 i8w*(qdhat was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed 1jchxrwkx7h1)n9 ax ( of 7.60 m/s in a time of 3.00 s. Through what distance does the 9kax 11h)n hwxcj x7r(cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Fyrsm6 ng0.f l+cpa:i 5ive 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 f0 r:l5nf c.mp6ay+ isgollowing choices best represents the magnitude of the average velocity of the car during the five second motion?

  14.17: A toy car initial l*z.if8+o amc:.a ;jxaiipk0ly moves to the right at 60.0 cm/s. Five seconds later, the carfji.m+0x.k;: a izlp*cio 8aa 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 second motion?

  14.33: An object moves with constantc /24k* zlq0uphsrzq;t4z du8 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 in free fall. Which one of th)*sz2)habcax)/jude0 r9.cx q t*qkde following choices best represents the di rda s)ud0q*xje)9/* hx2qkt.czb)carection of the object’s acceleration during its flight?

  13.26: An object moving o 0m5qp9fhq: zjnly 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. 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 d0h5 q:zm9qfpjuring the 8.0 seconds of stage II?

  15.32: An object moving along a line completes a 20.0 second tritv,u 4f) o1k+xts qw i)dc 51g.sornc7p 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), cvgo)4cf.q d+w xsntkort5uis1 17 must the object have during the 8.0 seconds of stage 2?

  13.33: At the top of a high cliff, a small roc vn*5tge d na4f+v(xon(a l7*dk is dropped from rest. A ball is launched straight downward with an init(t7v+n*4xn v al danfegd(5 o*ial 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-dri)3 rs5qsmy91*qb (v we *szapnving car races with a robot. The robot accelerat yrba)z1vsnqq s9s5(*w*m3 epes 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 uprzuzt81 nqeo83l. mkigcr 2u-(r g9y 9ward. 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 tie2-ir9mg3y orqc rn91u.u 8ztzgkl (8me is the object first at a vertical position that is one-half of the maximum height it obtains during its flight?