94.01: Starting from rest, object -- uw,c 7ulz38jvty sz1 falls freely for 4.0 seconds, and object 2 falls freely fol s y8zwv,7jctzuu3--r 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly acceleratos w6d/x/x d8nes to a final speed of 20.0 m/s in a time of /nxs8 o/dxd w615.0 s. How far does the car travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocit5s v rnaibg +d69h m+2q4cwxtn5u:vc4y. It lands 6.0 s latecx4: v w95tv4gcqh5 b+i nu+2nrs a6mdr with a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface ofsb 0a*vf5.m)co. qjwq the earth is accelerating vertically upward at j5m.*vofswc b q. )aq0$10\;m/s^2$. 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 at 27 m/s at oneh.2bwjs zopar/q d(xq5zt2, ( instant. If it continues to fall, one second later the object would(2z(x zwq2.5t dqrba, s/joph be moving with a downward velocity closest to:

  95.39: A car starts from rest and accef(ibffa 8z*j *;v)r ,tebg-vbsej 8;n lerates 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 droppe 0h;/geuzqyzkog.gsl /3 :t8lng o/k6p-r2u ed from the top of a building strikes the ground with a speed of 30 m/s. Assume aky-.3zz//2pg8 u;ol gse: 0q6n u lkreht gg/oir resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an objet7h5brtj0( wm ct in free fall has velocity 4.0 m/s in the upward direction. What is the approximate velocity of the object one seco(j7 h0 br5tmtwnd later?

  98.14: How long must a :rm tb9j fr(69biafg-$2.5\;m/s^2$ 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 18hi: ,8 .c/zuq1 z2su s.isahby m/s. If it continuec,:sz/syahii hu..8z uq1s b 2s to fall, two seconds later the object would be moving with a speed of

  17.02: A small object is released from rest and falls freely for 4.00 ;ukuvv gd ,b-jh3(ksp.fs25hs until reachif.,2sdgub s-k5v;hkupv hj (3ng 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 str.o u)4 l4ha)uvjgzm-v aight upward so that 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 represe uh.u)g4o-vmj)a4 vlznts the magnitude of the net force acting on the ball?
D 10.0 N
E 12.0 N

  11.07: A ball of massv p)2gl aqn 8cbt2s um+7g+z,h =0.100 kg is launched straight upward so that it rises to a maximum height of 12.bshqu7 ,ta2g p++l28ng cv)z m0 m above the launch 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 down an inclined plane hd)j w(fh+c zb3as speed 0.40 m/s two seconds after it begins toj)+ bcz w3(fdh slide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-,gs0pb9 en+e 4 w0nfjum tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top ofbfpng9 0 w0+euj4n,es 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 upwaj4h1isr,k dm4rds with twice the initial speed of another, how much hij,m dr1ihs4 k4gher will it be at its apex?

  02.30: A box falls to the ground from a delivery truck traveling at 30 g cw-b8/msd,vjc 7:ac m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box to come to cw:, 87csbjv /md-cga rest?

  03.29: An object is thrown upwards with ag710dljf/a mv velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displaceme1/dflvja g7 0mnt, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are th(s)slz ox: 5tzrown vertically upward with different velocities (1v, 2v& 3v resl:t (zsozx)s 5pectively). 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.

  10.25: Two point objects are lxq): eos1:ny kaunched straight upward with identical linear momentum. 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 laesxq)kyn1 o: :unch point in terms of H ?

  04.28: A rubber ball bounces on the ground as shown. After each bounce, the bat9+yl -;4aamq,vbo2 se a5iw sll reaches one- a2i ,9wtv;sqbeylas45+amo -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 second, what would be the time between the second and third bounce?

  16.21: At 1.94 s after launch, a projem 27xl y6 ;iuba;*vfqwjt8nf4ctile in free fall achieved its minimum speed during flight. I*8 m6nf jbv;ti47wx2a yuf; qlf that minimum 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 a high vertical cliff. The coll d w vq4kqcf4aqhps w5dq79:-8ision 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? df8sw9pvd:q7q54 cakwqhq -4 Ignore air resistance.

  06.03: Three students were arguing about the height oo/4tu9 mmzo 5xf 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 fal/t5 o4ux om9mzl 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 st(m*od gf ;+--qtsbc xxraight line. Its initial position is x0 = -5 meters and it is moving away from thx+fdb*-tco m x sg;(q-e origin and slowing down. In this coordinate system, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small pointacfd3sv v6y 7)-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 thesvcy6 3fa) dv7 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:o1putan )3x)8ni4- kl ma0 sj tcrw+c the top of a tall tower. Half a second later another rock, twice as massive pm8w+3j14cu x)ktl:c0o niar a)n -tsas the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s +aa41/,uaw hoc9ukg : e *zg0*x /iep xfm9wgwalong a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same trig* */x:wxo9 guazw ,agm hcw+ f94 /p0e1ekuaack, 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/ss 8)jwqq o40kap6z8rb along a track. The cart comes to rest after traveling 1 m. The experiment is rep6aq4rkb)88 qw oz0sj peated 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 wibdi,z0*fn1v0;qqs jo7 cae zml)o k6;th a constant acceleration o;mszlcf* qoa j1)0binze ;d0q,6vo7kf 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 fs .q2on1vidmp 55gf ;malls without air resistance from a height h above the ground. If the ball falls the first dis.dim 52f os1nm p5;vgqtance 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 uhzgzcx)e k-jvcdeja1vq0h38j tz2t+9 ru 16+niformly 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 time T b+zzqj -vu chk tj6dee0v38r j2h1x9)z+1ctagy Object 2 to that traveled by Object 1?

  12.26: An object is thrown hmadj0 d5g(n1bz,iv1 en2v5 nkorizontally with speed 10.0 m/s from 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 ob5ne2 vj(,amn bzkdg1 v n510diject’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The object remains-71n od ewbcq5 in free fall until it returns to its initial launch point. Which on7 1obn5-wecd qe 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 mesek:1i9 m6c:d lnpum6ters does the object fall during the first muiksn :c: 9d6p1e l6m3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surfp42cn i)teop 9v/c1ms ace in a time of 12.0 s. What was the initial speed of the box when it started4cv9itn/ms1co e)pp 2 its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 7.60 mr 4bc6k*nw q5wh2 yzv0*y;n:j ljy1 va/s in a time of 3.00 s. Throu:n* kbylj r c406y2 qj wv1v;az5*ynwhgh what distance does the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Fa2nqb, vx wazq43al*, ive 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 choicesq42a ,,vz3* a abxnlqw 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 at 60.0 cm/s. Five,c1k:jc)6 fil rv ji :ga:ic/p seconds later, the car is moving at 40.0 cm/s t,i vfj:gckpii 1:)6:caj/ r clo 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 acceleration of the car during the five second motion?

  14.33: An object movespl1 h (y*m/z e6iubpbbq ro(6) with 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 free fall. Which one of t r:0lws az x-hjhv k(i-;+7v7via6aathe following ch (wakavh -0xavtvzi7 a+ li:;jshr- 67oices 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 t16l-xj xzfvm)6coj - xje-3sf70 tjqnrip 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 object have during t3x)6o 1- zjjesjx -vtfjc6ln-7mx f q0he 8.0 seconds of stage II?

  15.32: An object moving along a line complx s- 3b j7sv::wac4,rcupi.je etes a 20.0 second trip with an average speed of 10.0 m/s in t4 :src 7s i -j.j:bc,wx3veuapwo 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 high cliff, a small rock is + p,50+ )nmobdzm*lri0ujp xcdropped 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 r b czj+ ,idmup*mop )0r0xl5n+ock, what is the speed of the ball relative to the rock?

  16.36: On a straight road, a self-driving car races with a robot. The robot acce tuphq quxe;g- x3+ ju*zhbm2e2le9ba4h72z 2leratesbmeh;xuj2tae24p z3hz- 9*u2q+ buelx gh7 q2 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 upwar l89am7:wixp, 13sqedi:fjtqd. The vertical position of the ball 0.70 s after rel8if,mx39e:tj qdl swpi q7:a1ease 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?