94.01: Starting from rest, object 1 falls freely for 4.0 seconds, and object 2 hqt0n9 m2: ute cu(n1ifal(unt0:qe12ui t c hn9mls freely for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final stb mxr,*7gm7xpeed of 20.0 m/s in a time of 15.0 s. How far does the car travel during this t77mmtgx x,* rbime?

  94.03: A ball is thrown off a high cliff with no horiz7 swfj b om+(s-h4bcw(ontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial velocity of the ball? jsh boc( 4wsm(7fbw-+

  95.27: A rocket near the surface of the earth is accelerating vertically u.srpneb2dr*u kz.8 m(pward br2m*zusp rn..e(8 d kat $10\;m/s^2$. 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 movind(40pg4qxq e7dkrklus s4- :o g downwards at 27 m/s at one instant. If it continues to fallqedk4sgrlu(:sqk -4x4 7o 0dp, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest an)tcb)fs .2 h)/yom svnd 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 twwxj:a7 kxa7u.;h*zkcn 5 :v gi: *tpuhe ground with a speed of 30 m/s. Assume air resistance can be igx57v w;*az u:kn:.ux :hcgtia* k7 jpwnored. The height of the building is approximately:

  97.09: At a certain tmei:(cr+di za m +x 2(:lhsv*pime, an object in free fall has velocity 4.0 m/s in the upward direction. What is the approximate velocity of the*+a2idm:+(hsrzlv: ixem c p ( object one second later?

  98.14: How long must a8 w7to+;.t w djcfqwxbz387vv $2.5\;m/s^2$ 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 downwe. oc .q.o8w,hqnr8ieard at 18 m/s. If it continues to fall, two seconds later the object would be movi8 oh,8. e cin.qqreow.ng with a speed of

  17.02: A small object is released from rest and falls freelu- 2pgsuv p14w)b:xx fy for 4.00 s until reaching the ground. What was the height above the ground from which the objepbx)ufx1uv w42 :-p sgct was released?

  11.06: A ball of mass =0.100 kg is launched stra)ru;3p/floi ey6ox 0eight upward so that it rises to a maximum height of 12.0 m above the launco;)6l epox/eiyr0 3u fh 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 straight upward so that it r333-s h+zl 7awhgyb(smaipz;ises to a maximum height of 12.0 m above the launch point. Ignore air resistance. 3 am;y+l3whzhsazpsb3i7 ( g-Approximately how much time does it take the ball to reach the maximum height from its launch?

  98.31: An object slidil hl wznfa9ig b2au j ,z/s6j(cy)1+ tkp65b;ing down an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does i,s;in1y +bbc5j z 2/9aw )kgj ll6 zut6iph(aft travel in three seconds?

  98.40: Coin I is thrownw2zfundf ml;c- wl51 2 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 s laterwm12f 2u;5zn wlcfl d-. 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 initial spgpelb xgre -l2kyt- 50,r t5+oeed of anothbo-pl+5kyeg2r5et g x ,tr-0ler, how much higher will it be at its apex?

  02.30: A box falls to the ground from amrj8mkuhxaxe khno) c*dof *(r +/6 64 delivery truck traveling at 30 m/s. Afte/k *+nf e 8rxjxd4rom(h* uhko6a )c6mr hitting the road, it 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 velocity of 30 m/s near the sur *ic0s- f8 9gmbtaxzkaf;g98sg8w4 apface of the eart8*ggfpsta;490x sakbwa 8mic-z 8 g9fh. After two seconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different maltfmlbpfx )(qfw :;d/5d/ 7jr ss (1m, 2m& 3m) 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 ;x:d/ bjlt)prlff/ 7md5 (qfw maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects a a5g+ 0d,alk7 yp4xvzidg9c y6re launched straight upward with identical linear momentum. Object 1 has mass M and reaches a maximum h+g94ki5zd0, ay dp axlc7gyv6eight 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 boo ;n70 )yeymng,wk ,7q+q,bfhrarsv3 unce, the ball reaches one-half the height of the bounce before it. If the time the ball was in the air brqya)w;,s,q7m+ r f0gonne 3 ,7v hykbetween 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 projectile in free aixx*k2vy x,dju4m u, ps/)b1 fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launch from the horiziumv41 ps) *, x/buxjxkad2y, ontal?

  05.02: A pebble is dropped from a high vertical cliff. The colli(g+k4d mpykk4sion of the pebble with the ground below is seen 1.50 seconds after the pebble +kmpkk4 (y4gd 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 parking garage. One sry k 5 p sx;o)031zyaw+sgzz-mtudent 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, approximately how tall is the parki-1sxgo;a5yrpz skm)z +0w3y zng garage?

  05.07: A snail is moving along a straight line. Its initikxsn7 lubz q )cl/4d0/al position is x0 = -5 4xqu l7/bzn d/lkc)0smeters 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/ jh3u7u wu)dqn 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 negligible timeuq)/ 3ujd7w uh.

  06.13: A rock is dropped from the top of a tall tower. Half a second later a cjap/pl8khsbn q+;/ 4nother rock, twice as massive as the first, is dropped./l8apqnpjkshb;4 + c/ Ignoring air resistance,

  06.18: A cart is initially mok.t2g xtcus9 f 7-esh81 6zutkving at 0.5 m/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same trackhsu71t 286kkft9s.u- xcgz te, 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 moving at 0.5 m/s along a track. The cart comes k splu:q*r 01vto rest after traveling 1 m. The experiment is repeated on the same track, but now the car 0 q:srk*1uvplt 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 straight liwv z6m o64sf u0z)mbs8ne with a constant acceleratio zv4 suow)zf0b sm66m8n 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 resu/4e8gv pzv:qbzs+ x +t falls without air resistance from a height h above the ground. If the ball fallsp 8gs qb /+vv:zuxze4+ 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 jgxw3y rpk sr.poiez87 42bmgf (s 68vq,/l9 sthe 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 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 2p/p,o3fym g2wjb .slegqr s7v(i 6x8k8 9r4zs to that traveled by Object 1?

  12.26: An object is thrown horizontally with speed 1v;8ql hbo o7o,0.0 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 7v;oho ,q8l bochoices best represents the time of the object’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upwardsmrxxs9o+u5 7 . 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 object as a function of time during its flight? u+7 sxr9x5som

  14.03: An object is dropped into free fall. Through how many meters dostf4 (z+ksfp7 l1ht2o8hye3 pjn;ic h/ 3,suces the object fall during the first 3.00 seconds of8le3n2fp4pf z tsj,t hikys o(u;c 1h+hc7s3/ flight?

  15.02: A box uniformly slides 7.50 m to ren- s+q9 3y l.q ei4si ssp3mm5-t1rjqost across a flat surface in a time of 12.0 s. What was the initial speed of the box whe+ ij-- ipes4 33srmlq. ss1qt5qmno9 yn it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 7.60 m/sne*0 (my3 yu4u- uycvito4 ln2 in a time of 3.00 s. Through what distance does the cart move in this time?4otyy 304nuc2 nv(uim-ul*ye

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five seconds latel usbuip8n2:mnb4b2e4 8 v5;(ubsmz dr, the car is moving at 40.0 cm/s to the left. The total displacement of the car m bsp e2n5bnb8u4i; lu vbu 4:2s(dmz8during 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 velocity of the car during the five second motion?

  14.17: A toy car initially moves to the right at 6axzbw/8)9gl d- blq1a0.0 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 represenl dlag1/xbwza9 - q8)bts the magnitude of the average acceleration of the car during the five second motion?

  14.33: An object moves with constant acceleratio c:d (s2 (mgvlisnzc- .z;ee 06t,zqhbn 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 movingr4,g; eihq*-q7n. 6 ojk lwpcg upward while in free fall. Which one of the following choices best represents the direction of the object’s acceleration during i *6 ql4k7e;.,i cnjwgrphq-gots flight?

  13.26: An object movink9 h9c,l8nz +qqgs7q4m 2gkpng 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. 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 during the 8.0 seconds k8pkgq, gq 9+2ncz7lsq4 9nh mof stage II?

  15.32: An object moving along a line completop nx7gx*0r h j7:k2r,cdeuhlth5u2 di,ad +(es 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 during the 8.0 seconds of stage 2?,7 dp 5 2c nhxa*r uduohd:2lgx ,(eh+j70ritk

  13.33: At the top of a high clifiwyl)5mbq5 ghc*5e5: m )nqtw f, a small 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 relative to thb)ni :*hgm55wtcm5w) eqqy 5le rock?

  16.36: On a straight road, a self-driving car races with a robot. The row o n/ -v1uip6yi5q8k9have 4l0+xjhybot accelerates8 i4x0-e1y9pqw+5 yiukla vv h6nhoj/ 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 positionpyp-es p. 9 7b9dcdsfgn(a/1b of the 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 vers p7fbad-ep. (9sd/ g cpn19ybtical position that is one-half of the maximum height it obtains during its flight?