94.01: Starting from rest, object 1 falls fr;)vzwpoe84 b h2w ayhu60wm q6 3wax:ieely for 4.0 seconds, and object 2 fallshz4ay8 :; uhpow 2a)wv6 6emiwwbx30q freely for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and un a bo7q jppqkw-5-sosey7:* t7iformly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travelqa7 -p-op5eb7jskwy7 otq* :s during this time?

  94.03: A ball is thrown off a highaom 2(6)r jtyj cliff with no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial velocity of tyr(t)a6jmj 2ohe ball?

  95.27: A rocket near the surface of the earth is accelerating verticslp 9:lb+p 5z 5yook0yally upward abs90l+y: zop y 55klopt $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is found t z igav0g+5vc9o be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the ob9vcgiav g +50zject would be moving with a downward velocity closest to:

  95.39: A car starts from rest aniwtq6wz5zu :7vfr g aq *-3bt7d 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 stcr zt z-z*it0+rikes the ground with a speed of 30 m/s. Assume air resistance czcztt+ 0-i*r zan be ignored. 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.c*sv j *osp7t the upward direction. What is the approximate velocity of the object one secs tp*j*o.v7c sond later?

  98.14: How long must a 1-z+n9 guz gscl+t mzjpal1)f7n7v9l $2.5\;m/s^2$ 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 dow cuiy-q:98) gajy5:fz1f w o8lo*ix ajnward at 18 m/s. If it continues to fall, two seconds later th5q-:czyaj 8*8wii :floy u xafjg1) 9oe object would be moving with a speed of

  17.02: A small object is released from rezahcnsy( 0+z 1st and falls freely for 4.00 s until reaching the ground. What was the height above th+1zz ncah0 (yse ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so that it4w 95ebt dj x3n:tje:e rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. When the ball reaches its maximum height, whic te:btdj4 9w5x3nje :eh 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 c-b-zbx*zdue. /t )ja is launched straight upward so that it rises to a maximum height of 12.0 m above the launajt/xuc - -bez*)dbz .ch 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 di1q;xvh mw1p -.;jgnhown an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does it j1qi1x.v; wh n;gmhp- travel in three seconds?

  98.40: Coin I is thrown upward f0 ztjho-npz0 7rom the top of a 100-m tower with a speed of 15 m/s. Coin II is droj0pt oh -zz70npped (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 spee:y+f)vqezbxy28l x )kd of another, how mlq+8zf2:xv yxe) )bykuch higher will it be at its apex?

  02.30: A box falls to the ground from a delivery truck traveling at 30 m:)stm8a5 1ph uh4efs h/s. After hitting the road, it slides 45 meters to rest4) hmhtues51ash f:8p. How long does it take the box to come to rest?

  03.29: An object is thrown up29*cw7 uvddcup cq.+ta6,nf rwards with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, p+*9 ucn cwt7 f,c.vrdu2qa6d velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown verticall- kyj 2+;msr 1)za5wbfvn q-eky 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 resistance is -5vr+jn k2e zsbaf1) mkw-yq;negligible.

  10.25: Two point objects are launched straight uk3s krm;+td:ipward with identical linear momentum. Ot:k k+ dis3r;mbject 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 above the launch point in terms of H ?

  04.28: A rubber ball bounces on the vk8 9ze0;ptef q52srp ground as shown. After 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 bef s2p0r5kvt89e; qp zounce was 1 second, what would be the time between the second and third bounce?

  16.21: At 1.94 s after 0 n+1p)jgu ,a.- t mqo.aoophblaunch, a projectile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectib+ -utgqoa p,n1)m.o ah .p0ojle’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The (2p1 (3h nkpat5hs. u;8dml iliriiz+ collision of the pebble with the ground belrt nh .li8 3piup2ams zhldi(+15;i (kow is 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 about the height of a parking garage. Onv1al).wu rx; qe student suggested thv)l q;.rw1uax at 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 k7q 6b59lvieg straight line. Its initial position is x0 = -5 meters and it is moving away from the7evl kg5bq69i origin and slowing down. In this coordinate system, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small pointlwa x6ho o8q6(:ozqa,-like object 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. Assume q(a l: 68qxh,ooa zow6that 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 oneas7tns6i2i:6d( l second later another rock, twice as massive as the first, ios(n6tdi:7ei 26ls nas dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s ane+j-.5ys/ zm z:qerxlong 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 m5/rqm+ j. xz-se znye:/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. Thew yr05nnhg.tx+6q3d z 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 t 30zg6ynq nxd+5.hrwm/s. How far does the cart travel before coming to rest?

  08.03: A dog starts fr wkl .9,etjfs6gc:gm (u5vy 2jom rest and runs in a straight line with a constant acceleration of 6t5,vsuw 2 je( kc9 mjg:.ylgf2$.5\;m/s^2$. How much time does it take for the dog to run a distance of $10\;m$?

  10.29: A ball initially at rest nfnpa kvj-(:j8h5 :xsfalls without air resistance from a height h above the g:(a8spn n- kfj5jh v:xround. 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 uniformly :k; ea go-fykc xmds8955o +sbaccelerate to the right. At time t=0,the objects are at the same initial position. Object 1 has initial speed twice thato 5;k5 - ok8msfda+gb9: eysxc 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 time T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizontally with speed 10.0 m/s f:j67x4yn-sjn9pk rn qrom 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 obje7 njnp9q:nskr 4j6y- xct’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The object remains in free .xx8 do.sqq0;th 2 hvh(qgc *sfall until it returns to its initial launch point. Which one of the following graphs could represent the velocity of t0 oqsqch xh svgh8dx. t.(2q;*he object as a function of time during its flight?

  14.03: An object is dropped into free fall, 05qbopy b(v:v6v izf. Through how many meters does the object fall during the first 3.00 seconds of fliiqv:vbvo yfz b, 5p60(ght?

  15.02: A box uniformly slides 7.50 m to rest acrocdwnv7 + i(-xdss a flat surface in a time of d+c-x(dvw7 ni 12.0 s. What was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 7.60 m.t 0 6k x29t siqped-d2uhilf3/s in a time of 3.00 s. Through wha2s-0t h6 iiftkpd3qe2u.x ld9t distance does the cart move in this time?

  14.16: A toy car initially moves to the right at )e tm3y rasp ;z6f6ku..u5a u:wxbxi(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;b6m auri53tap(u w.k6 xy .esf)u :zx during the five second motion?

  14.17: A toy car initially movesei ep8jro c*a)wu82er: o/rm: to the right at 60.0 cm/s. Five seconds later, the car is moving at 40.0 cm/s to the left. The 8*8e :/owioum) rearer p j2:ctotal 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-*uz9xzvm h0frn (ozk2/1cl zeleration 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 fak)5 zjak ,5oanll. Which one of the following choices best represents the direction of the object’s acceleration during itk) o,zakajn55 s flight?

  13.26: An object moving only to the rigdq oprzq b 8*ri4)4a,e nlv ,p2mu*ir7ht completes a 20.0 second trip in two stages, I and II. The average speed of the entire trip is 10.0 m/s. Foi2q ,r4u*v4da lm 8pre roin p7,qzb*)r 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 bv,tn xrx x595o1dyctm )s4pom5 .u0 halong 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 constant velocity of 6.0 m/s to the right for 12.0 seconds. What constant magnitude acceleration4x9v hd0 5 5tmru cs1n .xo,b5p)myxto directed to the left must the object have during the 8.0 seconds of stage 2?

  13.33: At the top of a high cliffi4 u/o xgx;qquk6b mooa/r9/8, a small rock is dropped from rest. A ball is launched straight downward xr6ka/4/goq89uob mo qix/u ;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 to the rock?

  16.36: On a straight road, a self-driving car races with a r 30) u8kirg l,rlyszw9obot. The robot accel3 8,zuilrl k 09ry)sgwerates 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 qmlmp: 5j9vv 0x+c:i me4gs w-vertically upward. The vertical position of the ball 0.70 s after v 40e: m59 ij:vwsmlg+-pmx qcrelease 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 its flight?