94.01: Starting from rest, object 1 falls freely for 4.dy-lx(1ty (era jwj3w1rd;n))* lke u0 seconds, and object 2 falls freely for 8.-drl1w)*ute) jlr aywe (1j(3yndkx ;0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final speed of e*14 oioooj:u 20.0 m/s in a :i oo1oue 4jo*time of 15.0 s. How far does the car travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal v h zy98kk*ysjk9 s (7m7okihk5elocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial 7k hj o8mi(9sk*kyykk s5zh79velocity of the ball?

  95.27: A rocket near the surface of the earth is acceleratirm 83g. t; g)gpbrt4eing vertically upward at ; )it3p.r mgr e4gtgb8$10\;m/s^2$. 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/g 7ibef-y/2d ub- i(d3iveu2ks at one instant. If it big(- ui 2k/2uid-yv3fed b7econtinues to fall, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and accele6kvk)a 3gpb :4n-azf (jt*wnerates 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)clr l l* 9jtig ejh7)amnf493 of a building strikes the ground with a speed of 30 m/s. Assume air resistance *43 citaeg99r nhljl ))7lfm jcan be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velo.;uf6 ldk.k jkcity 4.0 m/s in the upward direction. What is the approximate velocity of the object one seconl.u .kkj6fkd;d later?

  98.14: How long must y9c3ht :q53mf6w jyx6kf7sos 1hx+iea $2.5\;m/s^2$ 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 downward at 18 m/s. Iql w4a q6cij 4(zrc3/ff it continues to fall, two seconds later thezqa4lc f i(r3wq/4cj 6 object would be moving with a speed of

  17.02: A small object ibv+n3wm9/vvate.x +dc8s,1w2h q tds/ w mcg(s released from rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground from which the object waw s8++mnqdw1/g evs.b/3a td tv mxv,h(2cc9ws released?

  11.06: A ball of mass =0.100 kg is launched straight upward qkv8at9ew b . ta/+1oaox4fgur,o)n +s3ig0l so that it rises to a maxiretf vab3tio94aqsn).kg gx ,/+ ol0+ au1 wo8mum 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 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 launchedr3zm,+fvd 3g j straight upward so that it rises to a maximum height of 12.0 m abovfv3 +rdz, gj3me 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 sliding down an inclifrhah.21 jtudux /r 5/ned plane has speed 0.40 m/s two seconds after it begins to slidrha/ d/tu25.h1rxufje. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the toqy,nkf2oh h92c f00 bd)r8sofp of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top o0fd sfn2 kbcoh0y )2o,h89q rff 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 throw gbust.)) au28fk8.h orta dr0n directly upwards with twice the initial speed of another, how much higher will it be at its htr )f2bg8.od. au)t8 rua sk0apex?

  02.30: A box falls to the ground from a uek4b rado66yk2-yg; /iu/ h-ftyvz75w:qqrdelivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters k6zy ke-ro-/th uv 472q6bry5fiu:;g / wadyqto 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 sepjjt,b nbk439r c 75gurface of the earth. After two sgnce9jk 5b,3 7rbtp4 jeconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones ;pk k/ffiieb/-wi bmyt1/up -e04e(b9yru :qof different mass (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 maximum height of eachfik(1 km9rb-/p/ey0w-;itpu 4: uf/yebq ieb stone. Assume air resistance is negligible.

  10.25: Two point objejo rc f/9u*f7octs are 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, what 7rou* cfjof9/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 bounce, the b:r/v(l/ thn;0t()wu;vpunccj 5jw r hall(j/nrrut: ; (lnht)pv 5;cwh0 cwv/ju 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 second and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fall achieveda/aun5lr 0za1 lxyn ., its minimum speed during flight. If that minimum speed was 15.0 m/s, what was thla.5u xn,l aazny1/0re projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertica.1 rq*qcqtqj;u 5oz 2wl cliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air rq1 q;*ctu2.qz5wo j qresistance.

  06.03: Three students were arguing about the height of a parking garage. Oneqvfowb 3 ;p* ;g*q*njv student suggested that to determine the height of the garage, they simply had to drop tennis balls from the top and time thejqgb3o*; vp wnv; *qf* 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 alowl hh3k*8.9 tyxy7qzgng 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 a 7 wx *9hhl.ygqk83ztynd acceleration, respectively, are

  04.38: A small point-like object is pulled downwards+ xr; 26k7adz d;eixtg*7wzwf by gravity (down the plane of the page) but is constrained to exactly follow each of the frictionless pathways shown. Rank these three patigrxa7k 2; ;6d twz xew*7zdf+hs 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 .uyhm3n5*n3v27pcb gqv+2q( d+a wr p3tsibftower. Half a second later another rock, twice as massive as the first, is dbv qcrp2.th5w+3 a3y+b pv2d igq3*7s (nnufmropped. Ignoring air resistance,

  06.18: A cart is initiallyq;kzkyrq pzziqj,8;) ka- o -r,k* ul/ gb)(of moving 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 initialrpq;;arq/f,ugzz qjk-b8klkoy(* i -ok),z ) ly moving at 1 m/s. How far does the cart travel before coming to rest?

  07.11: A cart is initially moving a/qwnh 1l7h ms7t 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 initially moving at 1 hw m7l/q7 nsh1m/s. How far does the cart travel before coming to rest?

  08.03: A dog starts from rest and runs in a straigh14x ip*0 6fmfbuytha5ykb4j9n gk+/zo2jd 6 x t line with a constant accelerat1jy/ja fd6*b94iz 0fp ubhxotkn64g y mx+k25 ion 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 f-x90 wa i*foq vmr2f0kalls 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 required to fall the re-f*0 rwi92v fa0xqmkomaining distance of 0.5h?

  10.38: Two objects both v-vv1v v+;sgfmove 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 obj v1vfg sv+v-;vects 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 spvk2x q isi(71geed 10.0 m/s from a height H above the ground. The object reaches the ground with a speed of 20.0 m/s. Whigs2qi7xvi 1k (ch 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 object remains in fq w8**whfg m6dree fall until it returns f6gdqw*wm h8*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 dropped into free fall. Through how many mete :jvy0**hue hb..fzxcrs does the object fall jvhf*e:x0 by h*cz.u.during the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest acroxb1i)xar5 ab h,dlog1/t*vlb g0l x(.ss a flat surface in a time of 12.0 s. What wba/lx).*d1via5lg horx0bx1g,(t lb as the initial speed of the box when it started its slide?

  14.07: Starting from rae:jbi3* z7u um c wm:p:e,8vnest, a cart uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Througha:muve387w,j umic: bz: *ep n what distance does the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five seconds latead/up o. 0x*las9)e+ xkg xen1r, the ca/k+u nd g1es xp)o0aal*x. 9exr 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 velocity of the car during the five second motion?

  14.17: A toy car initially moves to the /vfz lv2:3 r)l 1idywjright at 60.0 cm/s. Five seconds later, the car is moving at 40.0 cm/s to the left. The total displacement ofjzf3llwyr 1dv2 ):/ vi 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 constant acceleration starting with veloeq2.mivzi1 + r,tc- rrcity $v_0 = 5.00\;m/s$ 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 qvi iqhkn9fqa.: ;y81free fall. Which one of the following 1 yn a9hk qqfq.;vi8i:choices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 second trip ojp1(.i ayaz/ad,x4g in two stages, I and II. The av ,jaz4opa1da. g ixy(/erage 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 afx06hf pdj32qwgv /+along 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 conshgfx2waf +d q 3j06vp/tant 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 b.-d8 fo.ee6:e hcfbfrest. A ball is launched straight downward with an initial speed of 36 m/s at . b-:ode hc.ef8fbef6 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 f 8chqb/cq( u*accelerates abucf*/8qqh (c t $8.50\;m/s^2$ 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. Thez0wq3 ep.dd sg29a.8ay n;lfi 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 time is the object first at a vertical position that is on32w9nf.. ;a8sdilapedqz 0yge-half of the maximum height it obtains during its flight?