94.01: Starting from rest, object 1 falls freely for 4.0 seconds, a:;q nxmkm.- ;sule(rynd object 2 falls freely for 8.0mu;x .l sn;k-(re :ymq seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rv chfk7yp.b8s1kg :m62 wj-lj est and uniformly accelerates to a final speed of 20.0 fj 6mykj1g-wbvh72spk 8l:.c m/s in a time of 15.0 s. How far does the car travel during this time?

  94.03: A ball is thrown off a high8az y)a(5)iv cn elr3w,tkql1 cliff with no horizontal velocity. It lands 6.0 8 a vlwna )cr3,ik1elt)(z5qy s later with a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the s.bc57:vv gs(-l t.(i mpojb7uxk0k e furface of the earth is accelerating vertically upward atk.-b0( xvm:lufisc7.o pgk 7 tv5eb j( $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is v7)u7k0yx v-g7pra*nne(ldb found to be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be mo rd)v vy-nxlbgn*7aeu (07kp7ving with a downward velocity closest to:

  95.39: A car starts 1isipdpsxyu.59tl8su pt/5s*f)jq.6 xu-g cfrom 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 from t-5uqe +kz q8tshe top of a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignort+- 5sukqe8 zqed. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/s in the u ykykn3148eioo 26yz upward direction. What is the approximate velocity of the object one second later?8yk1e6k y i o3u24nozy

  98.14: How long must a nx0m+v p;n isf4gt38q*3kcc 1mq*nc c $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling object g:7 y5n:e bqm4b sht0qw.b e9bis found to be moving downward at 18 m/s. If it continues to fall, two seconds later the object would be moving wbmweyb b9.: s btnqhg7:450 eqith a speed of

  17.02: A small object is/ab7f35 s -fedh2ny xh ctn)b+ released from rest and falls freely for 4.00 s until reaching the ground. What was t-xy ndb3n ae2hsh7c /+fbf)5the height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is 1hb( .r0q)kyv rgqda n7t- ze;0tv9nwlaunched straight upward so that it rises to a maximum height of 12.0 m abo79y;tq .rz n(0vh rd0 k e-nbtgvq)a1wve 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 launched straight uq*( :z,b vgn b4ia4kfupward so that it rises to a maximnfbi4*qbu az,kg(4 v:um height of 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 slid1; rmq3ec, 0b1ne ijon z6.5gjkb owg;ing down an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does itenjw;o 516gc,e1b 3mzbrikjg;on0q . travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower with a y;;n0kal-vkz8+noru speed of 15 m/s. Coin II is dropped (zero initial speed) from the 8ukk v;lyn-+a0 rn zo;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 tt7vh,7q tv/ pav4ex okfe3z5 1hrown directly upwards with twice the initial speed of another, how much hiv aq41o/vek5 zhfptxve37 7 t,gher will it be at its apex?

  02.30: A box falls to the ground from a delivery truck traveline658*amwk8g *)m qoelp sqa)q69e cgpg at 30 m/s. After hitting the road, itm8*)p9ksw6 a peegq6gm*)8l q eqoc5 a 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 sulygiqo:/elkl:z5aj 8 o dbk; 65l8x s(rface of the earth. After two seconds what would be the direction of the displacement, veloci:5 lo :z oskq8dl(kexbj 6li/5agy;8lty and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thv ez- w/sw.o*w.bvw;z rown vertically upward with differentvsz wwbw w/.*.e voz;- velocities (1v, 2v& 3v respectively). 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 objech 6vi,tqy(9m+nopc a:ts 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 is its maximum attained height ab+(tvpmoq9a :yhin6c ,ove the launch point in terms of H ?

  04.28: A rubber ball bounces on the ground as shown. Af q-yb1l(gl 5jater 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 bouab51jl-(lg q ynce 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 falltz :m ydmv1j(( achieved its minimum speed during flight. If that minimum speed was 15.0 mmj zdt1vy:(( 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 collision of the pegs (qnu;zkedj z)82 :rbble with the ground below i g2sqj;z 8reuz): nkd(s 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 abk:cv , ,yxbly4jfxoy)a9y8qm ;.f+vfm7g d 8bout the height of 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 tennis balls. If the time for the ball to fall was 1.4 seconds, approximately how tag kyy87of4yxcdv+;mb. :)m,j ,v9fbafq8 xyl ll is the parking garage?

  05.07: A snail is moving along a st .mubgh6*1 u4rztz/r traight 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 acceleration, respe u4rr *zmzt .bu6/htg1ctively, are

  04.38: A small point-like object is pulled downwards by gravitp.l 47ba s d:bdv9y(gfy (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) nefg7(syp bbl4d. :a 9dvcessary 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 tower. Half a second late ik1z**liaalu7ui3h( ;*tt n qr another rock, twice as massive as the first, is droppakn3ul ul*ah;*i*z( 7iq1 tti ed. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. Thyirhkqtm m4yhh7cd-k.,18 b :1rf z( l;z rk3je cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart (4 t h3k,h17 jmhcy1.zyk8dzf-rrbq l :kmi;r 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. 4 j: zoguu197o dhee;u778hvtths wk, 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 mz u7uh evk1ws,9d8 j;4teoo7uth7 h:g /s. How far does the cart travel before coming to rest?

  08.03: A dog starts from rest and runs in a straight line wi,y+y(b/ focft3tjq3/e kvb5kth a constant accelert bf,qt ykv /5 ef/cjk(yb33o+ation 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 withbqhsk7 *wd ms4-.lzv 0zm6f+ pr3yrh0out air resistance from a height h above thr0rdz3 k.s7wzsp*6- q h4mhy m+lvf0b e ground. 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 move ;o 2 es io l,4i:aylay6i7w3biand 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; Objeclosa2,i bwey:i4oy6a l73i i;t 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 horizontally with speed 10.0 m/s n/ zb4*tihh/x+u q*w qfrom 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 i/hw/tb xu4+*qhqzn* air resistance.

  13.10: An object is thrown straight upwarttp51.b 7dxlpd. The object remains in free fall until it returns to its initial launch point. Which one of the following graphs could represent the velocity o1tb x. plt7p5df the object as a function of time during its flight?

  14.03: An object is dropped into free fall. Through how ma fvjowvw )311sm.bfn46 y/m y txsr1e+ny meters does the object fall during the first 3.00 seconds of flight? s.s1rweo fjx /mfyb1mtynv+w416 )v3

  15.02: A box uniformly slides*(bpyhsr xs, 5feq;z1 7.50 m to rest across a flat surface in a time of 12.0 s. What was the initial spsr1( f y;x5h qzsb*ep,eed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 7.60 mtogavk301 8hi hm-x r7v7x:kb/s in a time of 3.00 s. Through what distance does the cart move in thish- 71h8rv0kkmxao 3:x7 tgivb time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Fikme2 u nq;.*bqve seconds later, the car is moving at 40.0 cm/s to the left. The total displacement of the car during tu nm* qeq2.bk;his 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 tog7i(mqav o)x1 the right at 60.0 cm/s. Five seconds later, the car is moving at 40.0 cm/s to the leftg)imvoxq ( 1a7. 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 constant acc+gea g. wuu(s7eleration 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. Wh 70urf;nmh4 /khl.at zich one of the following choices best represents the direction of the object’s acceleration during its fn u7a fhz0;4ht/lrkm. light?

  13.26: An object moving only to (mn 8n /2xukaybep :(;zgqt t4the 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 thexne4k:t/pb;((ay g2 zm utnq8 object have during the 8.0 seconds of stage II?

  15.32: An object moving along a lini/w v7je 6.bivs4 px iua6:x,r(tdu)ze completes a 20.0 second trip with an average speed of 10.0 m/s in two stages. During stage 1, the object m rjt6zu.4a6 ev,bi/u:i xip x)sdv(w7oves 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. A ball r0hyunf-5:: wa;q jneg( /l oiis launched straight downward with an initial speed of 36 m/s at a time 2.10 s after the rock (:e0 5yjiolgqr- /f auwnhn; :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 ackci).. i 7ebibn(bo4ocelerateboo.(k nce7)bi4 .b iis 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 wl*0bc0u o /sivertically upward. 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 time is tslo*/ 0ibcu0whe object first at a vertical position that is one-half of the maximum height it obtains during its flight?