94.01: Starting from rest, object 1 falls freely for 4.0 secondsmv.ykj) d .tn5, and object 2 falls freely for v .tjn)5 .kydm8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts fr,.boeo hnct7jnbil1a-f 5rpm/ :4 0ud0 w8wprom rest and uniformly accelerates to a final speed of 20.0 m/s in a r. lnp0c1j o,0r p -7a ofthiwmub db548/nwe:time of 15.0 s. How far does the car travel during this time?

  94.03: A ball is thrown off a high cliff wi,:a-1ir jlixl0qox*ns :8qz g4v1rioth no horizontal velocity. It lands 6q4rlol0 :z*i81-a vixqn,i jgr1:oxs.0 s later with a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is accelerati:h invp1 m xc 50qe2l6,nf4aicng vertically upward x26nqhl4 v5ci1acm0e nfp:, i at $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is foundv7 ay300kt ev dtlxv.0vc 3j3m to be moving downwards at 27 m/s at one instant. If it continueslv3cdt 37a00jxvtv3 ky .vm0e to fall, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from r spt.f6; fefe-s3m1 lzest 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 ground w;t :h) 6rz4ksrff2xlhith a speed of 30 m/s. Assume air resistance can be ignored. The height of the building is approximatel fhkt;lh xr:4zfs6)r2y:

  97.09: At a certain time, an object in free falr5i 3dh9oz c)/hjpnrpph. o,2l has velocity 4.0 m/s in the upward direction. What is t)39 r2zrdn/hhc5.pihj o,opp he approximate velocity of the object one second later?

  98.14: How long mustl.:i .i(n9e *rrrstoq-q:ez s 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 object is found to be moving downwalzl9l zio :1g3rd at 18 m/s. If it continues to fall, two seconds later l39lz1 :iol gzthe object would be moving with a speed of

  17.02: A small object is released from rest and 06a e3bke6vpt falls freely for 4.00 s until reaching the ground. What was the height ab0pa 6ee36vbt kove the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so that wu;u y /yvo8 lygf.-(hay48lrit 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 following choices best represents the magnitude of tg h4yyw/yo-(u88fa ;lvul.y rhe 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 bawzoh9fs9xr 78- fh6th )9jzrises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Ap9b9 6sx hh)hzaofr zj97-f8twproximately how much time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding 10 ba/esjr /d87ykxo :dzv;ie down an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how fakdv;0 jaid/7 :/8z rs byoxe1er does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower with a speed of 15 sodeiy t1t;(/m/s. Coin II is dropped (zero initial speed) fromd 1;/tyi eto(s 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 initial speed of an.bz 5rp5zl :ldother, how much higher will it be at its apexb: 5rzpdz5.ll?

  02.30: A box falls to the ground from f;l*q- ;k;bzyr b.tqoa delivery truck traveling at 30 m/s. After hitting the road, it q kbrb o;-yltz;f; *q.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 okvkz*7q; mgy0 pj zb67f 30 m/s near the surface of the earth. qv pj *z7yzb7kg 6;0kmAfter two seconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& -3nn wjdcu;x83m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass anu;3-dj8xwnnc d 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 launched straight upward with identz)c mj./xkukr-a .rn, ical 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 hc.auk k)jmrxn/.,- zr eight above the launch point in terms of H ?

  04.28: A rubber ball bounces on thaxfyhpjtl/7 3q 0 ,9zo5 uh3mte 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 and second bounce was 1 second, what would be the time between the/3x,t97ztafuyl 5 o3hj0p mhq second and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fall achiev(trh,k -z g8yspt l( f0+:,qm 7 wbm/lxxp)wtzed its minimum speed during flight. If that minimum speed was 15.0 m/s, whatx)7sl,/0, rmxl w(qz8tg(py -t :fwkh+m zpbt was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertic-;ky 4 -vsrslmal cliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. Wis4k; mv- y-lrsth what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of aoh0k* p,6*b8i kvvn1 pg hzno..+hz ji 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 tennis balls. If the time for the ball to fall was 1.4 seconds, approximately how tai.k*pnhg .* nkzb h10+6vjp v h,ioz8oll is the parking garage?

  05.07: A snail is movy958ddl1j gybing along a straight line. 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 d9y y1dl8 b5jgacceleration, respectively, are

  04.38: A small point-like object is pulled downwards byxt.5a ng 6dgn4 gravity (down 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 t6xga 5ndg.n 4the 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. Halfzmk ;f41w0tv.ymw1,z/y xdd w a second later another rock, twice 0. y4w1xzwfk ,mwzvym/1dd t; as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s aloza/sn1 9sg6g3fbwn 35egnbr (ng 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 coming to rn g3zbg(as6s5/ e9nwbf1 ngr 3est?

  07.11: A cart is initially mo- 24zyuuw- mutw*dve 2ving 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 initially42 -dvz*euwyumtw-2 u moving at 1 m/s. How far does the cart travel before coming to rest?

  08.03: A dog starts from rej k we,0m4i :u8yk2oqfst and runs in a straight line with a constant acceleration qkeiw4,8 mfyk2uo0j: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 fa1w,z 8tn2 pue4-9r kd il)nuhdlls without air resistance from a height h above the ground. If the b9un- , 1rld wh)kp48tizun2deall 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 move and uniformly accelerate to(duj -+imnw(zec nh3x2+x+ -jjxnc0yi2oll 3 the right. At time t=0,the objects are at the same initial position. Object j m3w0jiun+cjy-onxhxn+z (xl2e32d+( il- c1 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 to that traveled by Object 1?

  12.26: An object is thrown h7+xkkj+ g.z8. d5h lyxuf9qkj orizontally 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 the time of the object’s flight to the ground? Ignore air resistancx.k+x7j k+ku9h.fd 8 zyg5q lje.

  13.10: An object is thrown straight upward. The object remains n- 0 zuse1tkpfvmy)rr-b -v- 0in free fall until it returns to its initial launch point. Which one of the following graphs could represent the veloyrtmunvbve--0r1sp fz)- -0 kcity of the object as a function of time during its flight?

  14.03: An object is dropped into free fall. Through how many meters dom)(fkwp:m 8woqf7( tqes the object fall during the first 3.00 seconds oft 8fwm foq7wm)pk((q: flight?

  15.02: A box uniformly slides 7.50 *7um ,9gmr4ec hk(gep m to rest across a flat surface in a time of 1ug 7( p9c4kme*heg,mr 2.0 s. What was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 7.60 4jw zt 6fs9t3wkx9ppdqbzv yf08-7) vm/s in a timftj9w4q9fk t 06p d w8ypz -zxvbvs73)e of 3.00 s. Through what distance does the cart move in this time?

  14.16: A toy car initially m e0m(/ ,jtvxwrjach4b,8lmr,p zr- b3oves to the right at 60.0 cm/s. Five seconds later, the car is moving at 40.0 cm/s to the left. The 3trr pb ,e(mhj4- c arw,/ b,lz80mxvjtotal 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 velocity of the car during the five second motion?

  14.17: A toy car initially moves to the rightwx evs 8::nvg7t 6tm6j 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 c vm8we7sn6 :tj x6gtv:hoices best represents the magnitude of the average acceleration of the car during the five second motion?

  14.33: An object moves with constant acceleration std0kralkrc4 k8(s9dbmn 78q5 varting 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. -drumlh+*p2 .i y cl*c8 dvgrg5i5sr*Which one of the vril drcch 2*p*iu rd+sm5g*l-5 .gy 8following choices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 2:vz-xw t9l.qjx9ul t7 0.0 second trip in two stages, I and II. The average speed of the entire trip is 10.0 m/s. For stwz :v9 x.qlttj- u7xl9age 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 a e8scp/wmwi w3) r by+abj1e:czf1()h verage speed of 10.0 m/s in two stages. During stage 1, the obj)8 w ibejew/+ p (ah:c3fs1)mcw1rbyz ect 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?

  13.33: At the top of a high cliff, a small rock is dropped from rest+.qj q h ft,.ato,nc:t. A ball is launched straight downward with an initial speed of 36 m/s at a time 2.10 s aoj.+,qh :tfnqttc,. 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 r2n 2h(-laib8y-j (p*gapwkz car races with a robot. The robot accelerates pp (j2 bw-8(hzk2i ra*-lynag 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 ballko 3xw8 bee))w 0.70 s after release is th)3 ox kew8e)wbe 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 the maximum height it obtains during its flight?