94.01: Starting from rest, object 1 falls freu ni9)z tk5b-iely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Comparedz95ib -kni )ut to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final spegf;y d( lsk3t.ed of 20.0 m/s in a time of 15.0 s. How far does the car travel ddftk sgy3; l(.uring this time?

  94.03: A ball is thrown off a high cliff with no h) nekarhf3kekc 4mcn0rg,fl2b)6y; 1orizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was t2)h,rn3eynf) kalm k cb60kr f;c1ge4he initial velocity of the ball?

  95.27: A rocket near the surface of the earth is accelerating verticc/ klpd;8ouy4ally upward atl c4ky 8uo;p/d $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is found to be moving downwards:o)-5i hfosb e at 27 m/s at one instant. If it continues to fall, one secof5i oob:s -he)nd later the object would be moving with a downward velocity closest to:

  95.39: A car starts from 1 az qen: kh,w-xws;lr; 41qjgrest 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 dr i2n0f(cig,ch )j8 vkcopped from the top of a building strikes the ground with a speed of 30 m/s. As)j,8chvini2 c k0(cfg sume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has veloci+;fr0k -oh hrity 4.0 m/s in the upward direction. What is the appr-+hf rkro;hi 0oximate velocity of the object one second later?

  98.14: How long must w m-4t+ do+avaa $2.5\;m/s^2$ 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 att0 n1yrfd*,84c tcxup 18 m/s. If it continues to fall, two seconds later t,1f c0tpxr4cudnt *y8he object would be moving with a speed of

  17.02: A small object is released from res.cil9+l +rejl t and falls freely for 4.00 s until reaching the ground. What was the height above the ground fro+ll r9e .l+cjim which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so that it rise /5rbk)bdla-q s to a maximum height of 12.0 m above the laun b-)kaq rldb5/ch 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 straighyznh:;l-st 4 ft upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air f; :nltz- syh4resistance. Approximately how much time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding dowg;jxe-7q4ca,cr,vt4o(sd er n an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximateloq7c,jgcer4 dv te4-,ra x;( sy 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 sdu 4i(b fm,pv fl2*sf3peed of 15 m/s. Coin II is droplimv ,b fp2dfu *(s34fped (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 directlysz.xrbv* ;m ac06 rch yq)v6r, upwards with twice the initial speed of anotr. 0; sxqz6avb6c*vc ),yrm rhher, how much higher will it be at its apex?

  02.30: A box falls to the ground from a delivery truck )4;di)ztet., zgbw yetraveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take thzdy.te , )zb)i;ewgt 4e box to come to rest?

  03.29: An object is thrown upwards ww5 i -x gjgxe+1fnc +yz)2fr1cith a velocity of 30 m/s near the surface of the earth. Aft w1 g-ex)jiyg15+n +f czrf2cxer two seconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrf93m xm cc3j ramn so48o ;y5xxwzu*,:own vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank from*4 zo3 8cr jxa5m u;f3xy,9m: wonxmcs high to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight upwardtps ,b* 2ispwfy;f9d 7 with identical linear moment9pfptiw ,d ;b2s7sy* fum. 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 above the launch point in terms of H ?

  04.28: A rubber ball bounces on the ground as shown. After each bounce,9nr0e sbj2mp3 the ball reaches one-half the height of the bounce before it. If the time the ball was in se b092n3mr pjthe 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 *p(d 2hkyxa/glaunch, a projectile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initiak2gy had x*(/pl angle of launch from the horizontal?

  05.02: A pebble is dro,w1l x qkgdfs 566dd-jpped from 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 pebble hit the ground? Ignore air reswdg j6q6k d-l s,5dfx1istance.

  06.03: Three students were arguing about the height 3 n i9zwfq ( :n +r*ixk5w4x4dczixg2cof 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 talkixd5w:z +x4g9*cixzn2c 3wrf (in4 q l is the parking garage?

  05.07: A snail is moving along a straight line. Its init(3uwnza; ,/ze3ecbd wid)g q9ial position is x0 = -5 meters and 3u),nbc z3waqddzie(/w; e 9git 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 do w:a.6z4kh l cw0zf dyba+)3/lladih7wnwards 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 that in changing direction that there is no loss of energy and that it takes negliz3dlw+6)bza4la h .i7dfay/khwl0 :c gible time.

  06.13: A rock is dropped from the top of a tall e dksmslfd 79/c.g1c2tower. Half a second later another rock, twice as massive as the first1c e.lm7k g9f ss/c2dd, is dropped. Ignoring air resistance,

  06.18: A cart is initz1zxk5 hw-zpg dg48b( : tt5cjially moving at 0.5 m/s along a track. The cart comes to rest after traveling 1 m. The exgw-k(xcz b4t5jpz h81dz:g t5periment 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 :;2ul)yre )wlwg1qrj wtgci); f (ss1along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is in;)r1y sl ueq;r:1lw)gigsj fw(t2)cwitially 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 puv a0 u6bx5c3line with a constant acceleraticux5buv63 a 0pon 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 fallsyg /c8*bzl h ).g/i1u2yqpia1mr yan4 without air resistance from a height h above the ground. If the ball falls the fgiz1q) y8c/n .yhga/p21l*im rb u4ayirst 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 accelerate to the right. At time nycrgpk 2nbi 774,mgozt./x(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 tycbgnr i m74(op2,k/ztg .n7xime 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 *ggdin ow* 8u1thrown horizontally with speed 10.0 m/s from a height H above the ground. The object reaches the ground with a speed of 20.0g *in w1dgo8*u 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 fr 0e3a)nl 9oz q;aya9ngee fall until it returns to its initial launch point. Which one of n9aza)ao3 lg0 9yqn;ethe following graphs could represent the velocity of the object as a function of time during its flight?

  14.03: An object is dropped into freevzq(m ag.6u9lpdo9. y fall. Through how many meters does the object fall during the first 3.00 se am .6q(9gyvlp9do.uzconds of flight?

  15.02: A box uniformly sligf 7w.i4f(c ocdes 7.50 m to rest across a flat surface in a time of 12.0 s. What was the 4 (g.wf7ci ocfinitial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed mk o/yb4zbis3lg6c we4 t,y.*of 7.60 m/s in a time of 3.00 s. Through what di/o4,zet36ys*ciw mb b y. g4klstance does the cart move in this time?

  14.16: A toy car initially mov;l6 u8g-zmw tzes to the right at 60.0 cm/s. Five seconds later, the car tlm8z6 z -u;gwis 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 second motion?

  14.17: A toy car initially moves to the right ( :o:,nveycpc 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 th::vync(ceop, e 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 co+6vz+x+3 tick2 ukg cxnstant 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 free fall. Which one of thej4nmkycy *f/h5 akc5) following choices best rey yn/c jk5am k54fh*)cpresents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 second trip in tw2ct t6k1rneiklsjy+twx517 )hv8ao 9 o 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 v ixak25 79r 6hyvwl)tct11s+t kj8oneelocity 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 along a line completes a 20.0 second trip with an av zcmne4,/yn0/b bu.ostju i8+erage speed of 10.0 m/s in two stages. During stage 1, t.ez/b4iy/ t uomns0,ncj +ub8he 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 high cliff, a small rocka8n/2qicn6 od 93 uhrt is dropped from rest. A ball is launched straight downw 68hnat2nc/3qo rud9iard 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, :b warxx87 3 *k.voscr;7vge3z5h ru na self-driving car races with a robot. The robot accele b xsuv35*ocke rw:v;axh 73zrgn8r.7rates 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 vertically upwardqwnp7;uo8p( a(u 0 2pwyi,ncr9d3 aft . 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 i ;w dt73qwy0 p 9u2(a fna(piuc,p8onrs one-half of the maximum height it obtains during its flight?