94.01: Starting from rest, object 1 falls;u /u8c)yey9b ujy.pyanyd ;0 freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, y8 09 an jy;)ceb;duy/yu ypu.object 2 falls:

  94.02: A car starts from red6lp ,7h 711h cizmipmst and uniformly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far does thhh1lm ,pz7cm71id6pie car travel during this time?

  94.03: A ball is thrown off a high cuj9yewa1 /jy:. . pnzyliff with no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial velocity of the /p1awu ye jzyj.9.yn:ball?

  95.27: A rocket near the surface of the earth is accelerating verticallk6 g:z1j)yzwsy upward at :k y 6jzs)zw1g$10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is msd5nutp03c6 q j ld- +mom:p)found to be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be6 p sctmd:)-jo m3 mqpndl05+u moving with a downward velocity closest to:

  95.39: A car starts from rest and accel .w x (.tyb.hbmpmg)1verates 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 f:k 5q/.bmpgohx94cn 6i z) rperom the top of a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The hqx5n:cgbhe z i. )m6p op9kr/4eight of the building is approximately:

  97.09: At a certain time, an object in fref -q gqsrwh7k. y91xhldv-f26 e fall has velocity 4.0 m/s in the upward direction. What is the approximate velocity of the objec qh2kqyd rh91svl g.6--fw7fxt one second later?

  98.14: How long must aj, )l(g1sh:urh- vmr l $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling o1:u)b w ed-jjzbject is found to be moving downward at 18 m/s. If it continues to fall, two seconds later the object would be moving with a dz u :)jwej-1bspeed of

  17.02: A small object is released from rest and falls freely for;h kv:.m axgo(7rm ed 2drb70f 4.00 s until reaching the ground. What was the heighvh er.2d:70grb7omk;dx m a(f t above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is lauwr 5qhzqueh yvd8 qk 4k/mc-05n8k(k(nched straight 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 ch(rkq( m/kuhvy ek5h5d kqn0-cq 8 48wzoices 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 lau. bd;rq 2ng:rnnched straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how rbn 2;:n.grq dmuch time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plane has speed 0.40 m/s two kup6ntzq,y 6e2(fu (g seconds after it begins to slide. Approximately how far does it trk t2zg6uyu 6p, (qne(favel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower with a speed of 15fu38bscspd5t7j t77f m/s. Coin II is dropped (zero initial speed) f758pj773 fbss ttcdufrom 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 thh xlgefy.nn0+5o uee-t0ge 7 3xiyp)( rown directly upwards with twice the initial speed of another, how much higher will it be at its apex?e-y h(f3e xue7pg+5 gnt .xyi00el)o n

  02.30: A box falls to the ground from a delivery truck travelinciw,kq xho98a6 ez t)8g at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box zhw8 8 o qcix)e9a,6ktto come to rest?

  03.29: An object is thrown upw(y0wunyj(n; z;6+alkqbse*c *b zyv 0ards with a velocity of 30 m/s near the surface of the eartb y0n(;z+( ey*l*;av jyks6zq 0wunc bh. After 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 thrown vertically 1giz t7:hg rbu1ed 8r2upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank from high to low the maximudb 2i1r z8ht7egr g:1um height of each stone. Assume air resistance is negligible.

  10.25: Two point objje-7gj:zl4 g fects are launched straight upward with identical linear momentumgf-7 g :4jjlze. 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 fo)zly:h5,qbshown. After each bounce, the ball reaches one-half the height of the bounce before it. If the time the ball was in the5 lh)zbo q,:fy 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 an rk,waj( d4f1c( ro3schieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what3wd o(c, 4s(rj1fn ark was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from0(q g6mahn fsie7d;2i 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 ti ;6fg(7 qn0sdm2 ieahhe pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the*jt5o+w2+ gyo ih7zpz height 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 ofz +wgh2i t*p y+oo57zj 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 line. Its initial position is x6 t3r*rm1uepo0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system, the signs of the initial position, initial velocity and acceleration, 1*umer3opt 6rrespectively, are

  04.38: A small point-like object is pulled downwards by gravit4n p:.wyw-fg uj1nqo.y (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 releasu 14 wwq ngjnfo.p:-.yed 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 thkw.u 0dlb. 3:cvmvdl. yj zt02e top of a tall tower. Half a second later anothe kmy.d0.b3d 0tl v.z2lc:vujwr rock, twice as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s a+u4igk xo,38atzz: ( qgz tvdd(.v.qllong a track. The cart comes to reauv ,d8(gzz.4ldqk3 v+(: gqt t o.xizst after 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 at x6cmbux0f elne4*d ;* 0.5 m/s along 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 m/s n*dbeum x*6 cl40e;fx. How far does the cart travel before coming to rest?

  08.03: A dog starts from rest and runs in a straight line with a constaj qfr)ps+l *9jnt accelerar fj l*j)p+s9qtion 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 h n;3mcos /90bj 8hj dzz:gq3roeight 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 remabczroh z3jo3sgj8;:q9/m dn0ining distance of 0.5h?

  10.38: Two objects both move and unifo vz-gprb5zh(rgsqg ra8 5bu-ajv8( +6rmly 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 by Object 2 to tubp(j5ag- 8qrba (-gsh 8 +vz5rz6grvhat traveled by Object 1?

  12.26: An object is thrown horizontally with a uga) 0oiq(5sspeed 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 reoa0aq5g ) (isupresents the time of the object’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown smvq8osd3a9)fd q i2:utraight upward. The object remains in free fall until it returns to its initial launch point. Which one of the following graphs ca 2)8id mqdf: q3uvso9ould represent the velocity of the object as a function of time during its flight?

  14.03: An object is dropped into free fall. Throughb3b sp .p y).q 7)obhoccaxd3v5w*z;w how many meters does the object fall during the first 3.00 secondw.cv* ) cb h3pswzo;o.y a) 7xqpb53bds of flight?

  15.02: A box uniformly slides 7.50 m to rest across l * )g-y1 ho q,pcu5:vfplz.kxa flat surface in a time of 12.0 s. Wh:p5f u-l )x ph1. zq*gykolc,vat was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniforn( wbn ,wvt5n:+*)yt b rsjc,fmly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does the cart move in this time?j wf:nt* tw5 )vnby+cr, bns(,

  14.16: A toy car initi52tcxc ,r0 puytws lj 2u9.(,qsoqkx ;ally moves 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 dis q,ws 2c,s t0 uxulc9pq5yj2xt ;.rk(oplacement 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 at 60.0 cm/s. Five sewjn1zxa7p,61 t7nk3wxgjoa ) conds 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 whezg6pn) xxa1t oj3 7j,w akw7n1re 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 acceleration start4mkjy5fwhs *9chu je4l v+25 uing 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.3jgm3jbr6jw5 mg3lskes:dmf 1n9of-/ g+s )j Which one of the following choices best represents the direction of the object’s accelerationfk/3r-j 6 :s jos+geb3g13m nj5m jw 9gsfdl)m during its flight?

  13.26: An object moving only to the right completes a 20.0 second trip itr itvu v2u5 wx3)-r5kn 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 havevv53rwit2x5-r) tuu k during the 8.0 seconds of stage II?

  15.32: An object moving along a line completes a 20.0 second trfd , o+;v0pcnfip 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 acceleration directed to the left must the object have during the odv n,f;+cpf08.0 seconds of stage 2?

  13.33: At the top of a high clifv zyl*9v0x qs:f, a small rock is dropped from rest. A ball is launched straight downward with an initial speed of 36 m/s at a tisyl9 *v v:qzx0me 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-driwpaz.(8v wo+81 kibfn ving car races with a robot. The robot accelerates b8wz+(fn18a pv.i w okat $8.50\;m/s^2$ 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 upa2m1zc6 i ssz4ndu ;7g5ka3ggward. 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 tim; n3 61s5 7kcsimagd4 zu2ggzae is the object first at a vertical position that is one-half of the maximum height it obtains during its flight?