94.01: Starting from resa7g; d c:bl-rwblx v.2 shj;k9t, object 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, ;bhwl.b- 9gs7;k2jvd carlx: object 2 falls:

  94.02: A car starts from rest and uniformly actnwb 5hrqt996z bfp-9celerates to a final speed of 20.0 m/trt9qbz9fb hnp9w-6 5s in a time of 15.0 s. How far does the car travel during this time?

  94.03: A ball is thrown off a hig1s4 *qqa.bj f4 h8kfkbh cliff with no horizontal velocity. It lands 6.0 s later with a velohq4affqk 8k b.*b14js city of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is accelerating vbi,ao71yl:lt ertically upward ybl ,7lt1 :aioat $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling bodbek:6nxm6p1z*7duk 3qfn ;q dy is found to be moving downwards at 27 m/s at one instant. If idz63fn* 1kxu;b nekq m qd6:p7t continues to fall, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from resqouban:h53m 91o veh( f0s g2jt 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 wp w0oijsa4*+tql9 ht 0ith a speed of 30 wi4a0p qos*9tthl0+j m/s. Assume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain tb4wj:m1h.kq;*qwpwths7 y 7 +jd8pr 1s9 sqapime, an object in free fall has velocity 4.0 m/s in the upward direction. What is the srp:41;kqbj+w 7qj.9wt1d p8m pawhy*q hs7sapproximate velocity of the object one second later?

  98.14: How long must ,lt qlvlz; e5h.+aez*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 *7*bw vaf 0p,jsfb6 mudownward at 18 m/s. If it continues to m,u*wbbs 0*f7 6apvfj fall, two seconds later the object would be moving with a speed of

  17.02: A small object is released 3l;ck i0sx dx+from rest and falls freely for 4.00 s until reaching the ground0 ;x3sc+xkld i. What was the height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so thajnbmh 2w0*+eiipd3fs-: a y7wt it 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 the net force acting oh0w*nesif3awp 7 -im j2+:dbyn the ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =ec9z-(vus99yyx o j ;e0.100 kg is launched straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air reezusey j9cy9(-9;vx osistance. Approximately how much time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plane has speed 0.40 m/s twon* mv0jec7zil/n* -bt seconds after it begins to slide. Approximately how far does it travel in three seconds?7t*0vz b-jnie c mnl*/

  98.40: Coin I is throwvmde5:*yn u;3hcm40 py)gswq n 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 later. Assume u: hs*w4cmnm3 0vye qdpg);5y 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 upwardp .a7aw93jy7;uwzew d s with twice the initial speed of another, how much higher will it be at iz9 wuww;pd37 .eayj7a ts apex?

  02.30: A box falls to the ground from a delivery truck traveling at y hdd34duubfxycdey-ct1i( 7 a+/5j: 30 m/s. After hitting the road,jcduh-u x+t:/d dc 3yy4 iy1d5b( ae7f 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 paugk 8s8bv,8:y6f ;n0bojcw/s near the surface of the earth. After two seconds what b6u0s gw a:8knyfv8bc ;poj,8 would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m)fcmyu;;tn7om s1 uxg2xm5fm)l(7 e w- are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of eac ;7ffn(ym7o t5-x ; s)cmum1glwuxm2e h stone. Rank from high to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straighyz:;zjgl09th(b3vyh 1 xjx(z t upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above (g1zxjy0;:tvzbl( h39j yz xh 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 bounce .oegav4n +fpf63a kj 0(ge/gb, the ball reaches one-half the height of the bounce before it.f+obveg 4.n6a/fgp( 3k0jeag 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 projectiln+., e2ix1sa4 oj loqlf)atz8a9bps *e in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial as+)2t ,9asl .n*pjafai1o z beoql8x4ngle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. Thlxo; z6v.iy9cntg 0 q9e 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 t69 lc 0ivx ;o9zqyn.gground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking garal3j7* gu6ofl g9(fk,lbs 5zqege. One student suggested that to determine the hei lfjks9l e *g7log5zb,u( 6qf3ght 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 linx isz:(,*ijv+ rzri mc:f89qfe. Its initial position is x0 = -5 m ,8zjrmv9fs qc r(i :*ifz:x+ieters 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 objemmya js0:g,q /()soc d1t k/fvct is pulled downwards by 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 the object to be released from rest at point A and travel to point B.jaq/1f/0 m:v) tdsoysck, gm( 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 a5pti7p6x ht 03zyt2.r d+zefx second later another roctpyx .x+dt57 2pzh6 te0r3zfik, twice as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a t *yjg v -eytol6b)af6;rack. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, bu;a-*6bgj e)o6ly yvtft 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 f;+qk w1j l w)tdi/w8qa track. The cart comes to rest after +fiq ) jwq/w8wtl1k ;dtraveling 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 from rest and rupx (mt9 l:gvbh/r6q(nns in a straight line with a constant acceleration of 2p6nr h: vt/qx(gm9bl($.5\;m/s^2$. How much time does it take for the dog to run a distance of $10\;m$?

  10.29: A ball initially 9xuho/2r4l7c+a8z) kmjhv xx at rest falls without air resistance from a height h above the grx4ux8mroja c97/lh2v)x +hzkound. 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 and uniform-m r2.,*svpvs2a o,/jakmdh o ly 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 distance traveled in this timh,svm k .j-*rv2oasm 2pd/,oa e T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizontally with speed 10.ynh ;x*p14rkqa 3kra-0 m/s from a height H above the ground. The object reaches the grounk-aqn1*3 rprx;hyk a4d 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 resistance.

  13.10: An object is thrown straight upward. The object remains in f il8phvij5:.m7 j+ udy98 syvdree fall until it returns to its initial launch point. Which one of the following g7y:v yp id v8mh9sdj+5j8uil. raphs could represent the velocity of the object as a function of time during its flight?

  14.03: An object is dropped into free fall. Throughmaq7wabma af+m (9+5 ama4 p2h how many meters does the object fall during theaaamf+ mb4wmp m2+9 7aq5(aah first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface in a tdaehhv- au *78ime of 12.0 s. What was the initial spd7e 8u*h-havaeed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 7.60 5o3x5 hg*kw:fbip v 9um/s in hbw xg:9kpfu53 o*iv5 a time of 3.00 s. Through what distance does the cart move in this time?

  14.16: A toy car initially moves to t z0i5aeja3: dtt wgh7w9be5(r he right 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 choices best represents the magnitude of the average velocity of the car during the five seco(3 ht07ai5b rwa9et d:wzgje5nd motion?

  14.17: A toy car initially moves to the right at 60.0 cm/s.0uvq 5lnlp iy8.6/tvvbw* ( rz x9a5q4 xrrcf5 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 the magnitude of the u/ 6yb iv 550tvx nw.l5*l8frca9 r (rqvxz4qpaverage acceleration of the car during the five second motion?

  14.33: An object moves withu 7ctaq8g a0on ge74sih ,4xy,cm3w-s 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 while in f)ztjzn 9e 08ae8crm 6q+ct6olree fall. Which one of the following choices best represents the direction of the object’s acceleration duringola+c 6 0zmzen 9t)8 6qctre8j its flight?

  13.26: An object moving only5oqca c z ,pofv:x)i5; ldds0b 1do)(t 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 secondbaod;)xoq)p cs5 (1 5ldz,tv0ioc d: fs. 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 tripfbj oq e3 bg2l*al5*e6 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 t f*b 36laoe25b*qejlgo 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 bos+zw+e7dzo qk)1r+ iva h5 a6all 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 2ekor1q+za+ 7) h+ sdzoviw6a58.0 m further than the initially dropped rock, what is the speed of the ball relative to the rock?

  16.36: On a straight ro9 t5h leu;p0zlze8vt4 lf 5ee4ad, a self-driving car races with a robot. The robot acceleratvlthzel le5 8fe 54ptze04;u9es 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 ve.2dy fey9x7rj.+jvx m1nr m3y rtically 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 the object first at a vertical position that is one-half of the maximum height it obtains during ity. jne2x9yr+x vdyjf m1mr73. s flight?