94.01: Starting from rest, object 1 falw.mp+., gee4g nv o bou2u7;tmls freely for 4.0 seconds, and object 2 falo mmbeunv7gw.eg;t+,o. up 24ls freely for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelera z2 0nzpmu) q34us6svvtes to a final speed of 20.0 m/s in a time of 15.0 s. How far does th36 uqz4zs )2 upvnmsv0e car travel during this time?

  94.03: A ball is thrown off a high c6w: qr* 0q4ubvk2ms yf6 v.voonef i;359dgsgliff with no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial velof gi y9 ks02o 3ob vmg.v6 :*eqrvn45d;f6uwqscity of the ball?

  95.27: A rocket near the surface of the earth is accelerat tz sqh3r9vl0rtk*- q*i(5u .r y6rqqiing vertically upward az6k9s 3r-h.r(lu05rvtq qtq*qy r ii*t $10\;m/s^2$. 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 dow-xxr 87q28x/ j ckpejpnwards at 27 m/s at one instant. I2-7jxq8ekpc8j x/ px rf it continues to fall, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and accelerat0k+6kae)ied58 3khit9oesd f es 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 by 6h:t: rmvc 2yo(1xnhuilding strikes the ground with a speed of 30 yvyohtc2:hnr61( mx :m/s. Assume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object t5e1i 6kjbfy .wu1l9ain free fall has velocity 4.0 m/s in the upward directiby5. k16ef9t1ljuwa ion. What is the approximate velocity of the object one second later?

  98.14: How long must a l uyr c f*pag,i50jm7ed90:t p-vxk)k$2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling object;m ohia;-m u y3.frdei/ .3pgf is found to be moving downward at 18 m/s. If it continues to fall, two seconds later the mofu-./e. fayiim p3;d h;r3gobject would be moving with a speed of

  17.02: A small object is released from rest and falls freely for 4.00+o5 m xdxrncr3n k;-n9 s until reaching the ground. What was the height above the ground from which the object was released?9dnx nxm+o; ck5r n-3r

  11.06: A ball of mass =0.100 kg is launched straight upward so that it rises tgq k*7 m;/l0y:heu6o mn7bdh so a maximum height of 12.0 m above the launch point. Ignoonh7*e 06ls;m yum h7:kgb/dqre 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 straight3w,8a rgax9d +qj7h z)pk/cf m upward so that it rises to a maximum height ofa)/gm k 7pzw q,9jc+8x afd3hr 12.0 m above the launch point. Ignore air resistance. Approximately how much time does it take the ball to reach the maximum height from its launch?

  98.31: An object slidinovuh8j57 :.yqgv;g bcg down an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how fv58u. o;h7 gycqbvgj:ar does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower with a speed of6kqo 133wm;/t vclmsr 15 m/s. Coin II is dropped (zero initit3 v3qws/6;1omrmc klal 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 chy4 yh-x7atd, tvl15s0-tap with twice the initial speed of another, cvh-1alh5t, t0 stpy7x4d y a-how much higher will it be at its apex?

  02.30: A box falls to the ground from a delivery trucwqv.kapb 945 uk traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the boxk q.b4au9pv 5w to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/s near cn w+h5./ gw7 ccovtv(the surface of the earth. After two seconds what would be the direction of the c(+hvwgt5c 7. ov/nwcdisplacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of diffe5lu.*eibvaj i, -5ilz va9 /mfrent mass (1m, 2m& 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagr*elami9ib5javz- /livf .5,uam 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 areukn. ss(s t)w3t 0u6an launched straight 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, ws usn)6.autw( kt03s nhat is its maximum attained height above the launch point in terms of H ?

  04.28: A rubber ball bounces on the grm 7xb6 (9dklvtykx jqnkiq2fg 6e3y,e7 n:y-1 ound as shown. After each bounce, the ball reaches one-half the height of the bounceqxk3gt(61-m7d fnyjye ,xn2qy 9k 6kv7 ibl:e 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 second and third bounce?

  16.21: At 1.94 s after launch, a projetvgfw0x8pf44s7qpg;r ihtg +9 t8lc: ctile in free fall achieved its minimum speed during flight. If that minimum speed was 15.rlgggts tf wptc:i 07f +4;x9 84vph8q0 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. The wntt ,/ov6k- lcollision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit , ok-nvlw /6ttthe ground? Ignore air resistance.

  06.03: Three students were arguing about yve;f 71n h7imcb 5fc(:xtci- the height of a parking garage. One student ixvfi1n5tcym-h7 ;c c f(b e:7suggested 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 parking garage?

  05.07: A snail is moving along a straight line. Its initial position is x0 =tjsa+ ,3+ cc4ra*lno v -5 meters and it is moving away from the origin andat4jn,co sa+v c*l+r3 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 downqpo g8zw.- rz,wards by gravity (down the plane of the page) but is constrained to exactly follow each of q,zgp-z. ro 8wthe 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 the top of ant+(b .3ovx fa tall tower. Half a second later another rock, twice as massive as the first, is dropped. 3v o.t +(fanbxIgnoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s al3yms28 wbm 9bv+)7t etnb*hupong 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 menw +2ptu)3m8*7 b9vmyhstb b/s. How far does the cart travel before coming to rest?

  07.11: A cart is initially moving at 0.o1*sqmmhh0, y ,/po uww,bz i:5 m/s along a track. The cart comes to rest after t,hso/:* y iop1whubzm q0,w, mraveling 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 rest?

  08.03: A dog starts v 8++*hpuaulkr dt+5 lfrom rest and runs in a straight line with a constant acceleratiluvlkd5u+*+ra8tp+ h on 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 fahle5 jk)orge 9 av/.i-lls without air resistance from a height h above the ground. If the ball falls tle9 k.5r) - ajvehogi/he 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 moasf 4z5mb ;s,dve and uniformly accelerate to the 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 distanca,4zds5 fm;b se traveled in this time T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizontally with speelodn., c -f9ezd 10.0 m/s from a height H above the ground. The object reaches the ground with a9edc, .nz f-lo 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 uike bed -j-) ye;r+k19j98qg cq alqa1pward. The object remains in free fall until itj kkjle; +ea a8q19 cg- q-e)db1y9riq 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?

  14.03: An object is drcj0d5) r+bysropped into free fall. Through how many meters does the object fall during the first 3.00 sec+yrdr0c b5)sjonds of flight?

  15.02: A box uniformly slides 7.50 m to rest across ae h64 nen:fbbh3bg f7+ do2rr7 flat surface in a time of 12.0 s. What was theh74dgbh bo rf:b +f3r6n2 e7ne initial speed of the box when it started its slide?

  14.07: Starting from rest, a car;o-gr0mi 8jme4 .pb6gjv.z brt uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through wh-jm ozb.gmbgrr4i0j v6 ;8p e.at distance does the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 ctqasgu.rt-04zmw u:qj5 v 1.r m/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 sqmuz q.tu1.j0tarw4g 5r:-vthe magnitude of the average velocity of the car during the five second motion?

  14.17: A toy car initially moves to the right6j1q ra7cogsn 8-c0x k 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 87xra0 6oj gcnqk1sc-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 movesu8 ,klsr5fawq29q2mw with constant 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 rhwj2a / xqs1t p3b78nwhile in free fall. Which one of the following choices best represents the direction of the object’s 73/qawjh2s1 r xnpb8t acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 second trip in two g bkh 1w4p+f7wstages, I anwfw4hp7+b1 kg d 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 of stage II?

  15.32: An object moving along a line completes a 20.0 second trip w ;kwr0ak(y lkk **apt,ith 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 ;t kkyrw l p0k(k*a,a*stage 2?

  13.33: At the top of a high cliff, a sy-q ydnd975u( gbk0rmlxr43rmall 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 toydruqkr m537g9r(xdbly0n -4 the rock?

  16.36: On a straight road, a sa-9s2s cp h3zgelf-driving car races with a robot. The robot accelera ps3zas9h c-2gtes 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 bazvrw8nubn 5 ixnm61b*ni:9q6ll 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 that is one-half of the maximum height it ob:*156 r9n8i bvmxnnq wuiz6n btains during its flight?