94.01: Starting from rest, object 1 faldhp* 1rqx) h3rf,e- ucls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, r3cf1u,xphr * he)- qdobject 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a f1yjm oe6q8jomm n612n inal speed of 20.0 m/s in a time of 15.0 s. How far does the ca2moj16j nm o81emy q6nr travel during this time?

  94.03: A ball is thrown off a high cliff20yat v534ku, g.yce twajxj2 with no horizontal velocity. It lands 6.0 s l. 5vg2 , aty c4jwyke3aj0u2txater with a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the ar6.ugbi5kjb (w m h.+surface of the earth is accelerating vertically upward ah+ugbr(5wi j.a 6b.kmt $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is fo sh8 tw*jvai:a01kz3ound 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 dot hi*w 3 0s1oaza8jk:vwnward velocity closest to:

  95.39: A car starts from rest and accelerates at 64 iavehz30g i/u2 jme$0.80\;m/s^2$ 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 grouv/uru s9xp/ y7;t: mjnnd with a speed of 30 m/s. Assume air re/u vpu t/:ys rj7nxm;9sistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity uj9h 1dlu92i )khmxy,pw s )4f4.0 m/s in the upward direction. What is the approximate vk9j9h 2y)h) xm u1iwfsp ud4,lelocity of the object one second later?

  98.14: How long must a 8ugvu 1;4mpq3+wcy zg$2.5\;m/s^2$ 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. If it cz;s.ye4oyt *fc6r q* eontinues to fall, two seconds later ;zoyefy.6te**s r q c4the object would be moving with a speed of

  17.02: A small object is rev*9tr l)eutp lv2ku)o* 5yiyp4p le ;;leased from rest and falls freely for 4.00 s until reacet9l5 vt4;2pll*ve)kyu;pou p*)riyhing the ground. 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 that it rises to (bwv(s68d csatojyts (vt30pj22j1n 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 bec s2tjv o0ssway (btp26(1 3dvt njj8(st 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 upward so that*(drpi; pcxxt s82uc * 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 itpi d*8r2u c*tcs(;p xxs launch?

  98.31: An object sliding down an inclinxn(;fsz28aynu v9/y led plane has speed 0.40 m/s two seconds after it begins to slide. Approximately hos9(2v/u nayy;znx l8fw far does it travel in three seconds?

  98.40: Coin I is thrown upward a,37 3b7athp)sukat5 s1mkob from the top of a 100-m tower with a speed of 15 m/s. Coin II is droppedsbk)3ao t a7km73buh5st1,pa (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 witr( ss+bhp*. pdh twice the initial speed of another, how much higher will it be at its apexsh *sp brpd.(+?

  02.30: A box falls to the ground from a delivery truck traveling atpq;agjw c(au)2o; /gvhju 86zfcz :7s 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box to come to respa8 wusa;jj67z g;u/(c:v 2oqgc z fh)t?

  03.29: An object is thrown upwards with a ve6vdzy g bf5kf)n kx u12,e6io(locity of 30 m/s near the surface of the earth. Aftn)z2,yk6eg uf6vio 5fk1 d(xber two seconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m,qhred 97 )ikveys 9e), 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 each stone. Assume air resistance is negligible.reeq9 e9)vhy7s,idk)

  10.25: Two point objects b.ni+t 0d k2b)v jlhf.l l.ck:p 3sx2tare launched straight upward with identical linear momentum. Object 1 has mass M and reacdf lxvil khs:.t2.b0jknt. 3l)2+ bcphes 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 gra6u 3na93. opgm;mrxoound as shown. After each bounce, the ball reaches one-halo3g 9oa mnrmpuax3 .;6f 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 achieved xv5(*gwn ,yllx*- v;u7q scsq lkr*1hits minimum speed during flight. If that minimum speed l w 7vsxk(lghu* ,qc-ys1l*n5r ;xqv *was 15.0 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 tj 4vo5*9oy5wm r0vswcollision of the pebble with the ground below is seen 1.50 seconds after the pebj9*vs55w tvy mo 0wo4rble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height nk-,8uvlg x7nu+ a apnlh 7461hoc/ez 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 balhz4o76c en/n7ahgvkuu- 1x lapnl,+8 ls. If the time for the ball to fall was 1.4 seconds, approximately how tall is the parking garage?

  05.07: A snail is movingkge:p4y bd-.r along a straight line. Its initial position is x0 = -5 meters and it is moving abgkde:4 - .pryway 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 gravit ki)6d/1uj nddekr g)9y (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 that in changing direction that there is no loss of energy and that it ta /ddg1nk) ij kurd)e96kes negligible time.

  06.13: A rock is dropped from the top of a tall tower. Half a s -k.kdl/32bu2yotcp vzr+yd9econd later another rock, twice as massive as the first, is dy2 o3dkb+.c2 dyr/lktzu-9pvropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The cart comes txy /b9qdqjnc:4rycvbf8 55 f 4o rest y:5y/xc94 j 8v5f 4rfdc bnbqqafter traveling 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?

  07.11: A cart is initially moving a2isx h+c84xn ht 0.5 m/s along a track. The cart comes to rest after traveling 1 m.h shic4 x8x+n2 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 runs in a straight line withxc(dlup a8 sphvh / (e*)tf/z5 a constant accelerationpdhu)/(pxc 5tfzv*e( 8s ah/ l 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 without air resistance from a heigh7+ye 0ecwu 8jv rv/vx,t 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 remaininv7 e/+cv,8 x0jrywuev g distance of 0.5h?

  10.38: Two objects both move and uniformly accelerate to th t0.wte6hpoo*n (nu2u5tek2ie 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 time T by Object 2 to that trav en 52pt.0h*uinok2 6(uw ettoeled by Object 1?

  12.26: An object is thrown horizontally with speed2i8dkh6 7pzcpr6 wu8y 10.0 m/s from a height H above the ground. The objeu68yi2p dz8 k ch6pw7rct 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 air resistance.

  13.10: An object is thrown straight upward. The object remains in free fall ud2cdr r ( (0zou2d5vpuntil it retuv2u2 0p(z5ducdd(ro r rns 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 0dbv9b4 3g/ckp lnwl( free fall. Through how many meters does the object bncvl/g 3 4w9lbp(0kd fall during the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to :fqzw)4 j)gcnncw e(4rest across a flat surface in a time of 12.0 s. What was the initial speed of the box when it started its sli4)) 4few wnn( cjc:zgqde?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 7.6 4p;aoq,m nr4c0 m/s in a time of 3.00 s. Through what distance does the cart move in this n4 ;mpar,o 4cqtime?

  14.16: A toy car initially mo/ +c8i-ar ejsives to the 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 s/ jaeir+c i-8time 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 righl .cvtww s:cf .0c+ kp;trha4ns81fu7t 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 averaf+u slnr7 w.: askh1cv8;.pttcc0wf4ge acceleration of the car during the five second motion?

  14.33: An object moves w2ud. svor-7zrith 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 movi;tn.te; ue*)z-ed gxur9p-w x trqb/ 6ng upward while in free fall. Which one of the following choices best represents the direction of the object’s acceleration durib. t*/)x wdr t;; x6-teeqzuup9gn-e rng its flight?

  13.26: An object moving only to the right completes a 20.0 second trip inroj3 u 57o5nnp8.pcpf 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 po8jcpu7.53fp 5onrnconstant 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 3i19-osv * ond:buyqj 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.s:bo uj-3in1vq 9yd*o 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 hi fs my/9fa.xmj5i6 rq,gh 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 fall.sf5x ami9 my ,6qfr/jen 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 racesq+.dd .ley i5r with a robot. The robot accelerates at d+l. ydqei. 5r$8.50\;m/s^2$ 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 upw mxztd g0.9pe3)l,qdp ard. 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 ma,z . m0tl3q) p9pgxddeximum height it obtains during its flight?