94.01: Starting from rest, object 1 falls freely for 4.0 seconds, an1d :btepg6vpj5/tvu1ec5 o1dd object 2 falls v51 /vtodeg5b6pu je 1tcp1d: freely for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final spb4s ua j74dir (j0*hyseed of 20.0 m/s in a time of 15.0 s. How far does the car travel during thid4 *7by0uij 4r ssja(hs time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. It lanoe*4 uc,/bjkth:z,bhds 6.0 s later with a velocity of 40 m/s. What wasb,k,e: /*thjb4zouch the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is accelerating vertii+apt ,t2m ssm8vsb.1cally upward at ts1m8s pi,tm a+bv. 2s$10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body isf3vf 0h g*1jdt;*xjww found to be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be moving with a downward velocity closedf0h 31f**wv;xj jgtwst to:

  95.39: A car starts from2b)(-4 tljfex7 r j96o dhthxdf j+6nf 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 the top ofivqoq, k75.09zj b mof a building strikes the ground with a speed of 30 m/s. Assume aioiq5fz j,v. obk0q 79mr resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free p43+j (ynfsxy9nx5g jfall has velocity 4.0 m/s in the upward direction. What is the approximate velocity of the object o9 y j3+xp(5jxnnfg4ysne second later?

  98.14: How long must k1.t 6fgvdjy-3bmp,x ut a3z4a $2.5\;m/s^2$ 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 down)sp8nwtftm.2 jrtv l9b7 0hu.ward at 18 m/s. If it continues to fall, two seconds later2b.n ftuh pttw)l0 j8mrv7.s 9 the object would be moving with a speed of

  17.02: A small object is releasel )qu.4o-hr2kx 4yos t6 +ewaqd from rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground from which the object was42.)qk6oy4 ros h uql xte-+wa released?

  11.06: A ball of mass =0.100 kg is launched straight upward so that it rises tocxdnb/-t-* cx a maximum height of 12.0 m above the launch point. Ignore air resistance. When the ball reaches its t*cxc-bx n-d/ 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 =0.108 fp- / qpz9wwo.*lj*w- le bxysd jtk0*2q+mm0 kg is launched straight upward so that it rises to a maximum 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 launchdex t z.jj2y- 9mw/mw0ls bqq8*+ -wkp *p*lfo?

  98.31: An object sliding down an inclined plane has speed 0.40 m/s two pu2 uqt58(ga qseconds after it begins to sli8qupa2(u qg5t de. Approximately how far 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 nfn.08 hfri8g0t q/zy 15 m/s. Coin II is dropped / n.ift yq8zfnh0g8r0(zero initial 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 with twice the initial speed oovw1mond*52 a4w hs +pf another, how much higher will it be at its amhw 1vw2 pd s4o*5oa+npex?

  02.30: A box falls to the ground from a deli m/qa;rmtn0vu+l 5fm/very truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest.5um mfqvr0la/ tn ;+/m 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 qyzrayan0yj14m8 ;5athe surface of the earth. After two seconds what would be the direction of the displacement, velocity and accelerationayyn5;41a q80 zyramj?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3hdo.8+ xvw :nym) 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 each stone. Assume air res8. wvndh:y ox+istance is negligible.

  10.25: Two point objects are lau+ua.2h rc5 yvtnched straight upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch 2hr.au v5+yctpoint. 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, the bvjk/7qv48 4a .uq g lutz.a4small 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 second8l 7avvu u s.j4.qtzka4 /4gqm, what would be the time between the second and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fall achieved its mini +b52w qt,hh*v gn ym*k-jjnl7mum speed during flight. If that 5bnn-wy hjlg hm+ ,q**kv27t jminimum speed was 15.0 m/s, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from kzv 2v8pfjd*, a high vertical 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 vv zp 8,k2j*fdpebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking hcp0s8iz;+cdj8 lsg.j k4 g y6garage. One student suggested that to determine the height of the garage, t. ik c0gg4sjz+8 pydh8;s 6lcjhey 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 q3(kdi(c h-h o vyi79qhzs0n *line. Its initial position is x0 = -5 meters ih 9nh (ycz s7qoi3*k(vdh- q0and 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 object is pulled downwards by gravity (down the plannj23 :tg2 0egj0t snis:he/cbe of the page) but is constrained to exactly follow each of the frictionless pathways shown. Rank these three paths from 0sihgse n/ 3j::net 22gc0 jbtshortest 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 tower. Half a second later ano(tlp.vzr94 jc9tmze0ther rock, twice as massive pjt9.ve4l09rzctm z (as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially mojk-e2qh2 u6e eving at 0.5 m/s along a track. The cart comes to rest after traveling q eue2kje -2h61 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?

  07.11: A cart is initially moving at 0.5 m/s along a track. The cart comkjzmm3-g7( / hd6r tspqzp k8/es to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart q-g/ hr(p8 6kzdsmzj mkt3p/7is initially moving at 1 m/s. How far does the cart travel before coming to rest?

  08.03: A dog starts fro 9s/m4zv ev-7i xk+zvfm rest and runs in a straight line with a constant acceleration of z/fze vvx-s7+m49ikv2$.5\;m/s^2$. How much time does it take for the dog to run a distance of $10\;m$?

  10.29: A ball initially at rest falls without air resistance from a heighwr 53ip /3rjvft h above the ground. If the ball falls the first distance 0.5h in a time t, how mi 3pvfjw5 /r3ruch time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly 7nxw ye(4: ihdl0:enaaccelerate 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 timhdax7nw : 4iely e(0n:e T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizontal 1 5(zzio.geiw / z/g3zdor/loly with speed 10.0 m/s from a height H above the ground. The object reo lg. io zie zw/ozd/(g3r15/zaches 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 resistance.

  13.10: An object is thrown straight upward. The object rema(h.b z):l7 suyy qs5) kwb6tknins in free fall until it returns to i:bkh)bzs tn u.7y sl yk)5(wq6ts 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 metersip0 dast4 )rz( does the object fall during the first 30 4a izrds)tp(.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface in a 7n 0rxxbg27 w;olr8op time of 12.0 s. What was the initial speed of the box when it star08orx7b2; x7 wlgr nopted its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 7.60 mnly1c p(x;rqk cm4,s (51dobi/s in a time of 3.00 s. Through wha(mq cy5n;dbik l 4r ops,c(1x1t distance does the cart move in this time?

  14.16: A toy car initially moves to the right kh/kq/drjvl g2*4l: hat 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 2vkd:l kh/q * jlhg/r4during 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 righ1gezn;hdpgl39 s0x9 et 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 magnitudx9l e0nedsgp 1g;z 93he of the average acceleration of the car during the five second motion?

  14.33: An object moves with consta brgl/g .pouc a5x)wo2 m1z.nb*c+n5int 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 wnk8+ 2bwfk u(d4mm6h fk 97ehqhile in free fall. Which one of the followb dmwk 8h( 4hefu2mkn+6qk 9f7ing 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 tr r (642 w 5x(i+egkcps82knftps0kn hiip 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 the obt f i605ekr2(kn2ks4cswxi8gnp+h p (ject have during the 8.0 seconds of stage II?

  15.32: An object moving along a line completexn5gp4d.ly/ bj3t+y c s a 20.0 second trip with an average speed of 10.0 m/s in two. 3t/4+cbgl5 j nyxpdy 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 stage 2?

  13.33: At the top of a 0:utpv:du j3a high cliff, a small 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 speeduvdp: : 0ja3ut of the ball relative to the rock?

  16.36: On a straight road, a self-driving car races with a robot. The robot u3o 34hwqj xa4.8s oam/rbvn 7accelerates 83q bu oa.v4j r sxw7a3h/mon4at $8.50\;m/s^2$ 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 t 2z2a yi 5q1bbzy2kjm7he ball 0.70 s after release is the same as its vertical posiyb7 52mq i2kb2jyz1z ation 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?