94.01: Starting from rest, object 1 fj3.5menku l:falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared tou3mkfj .l5: ne object 1, object 2 falls:

  94.02: A car starts from rest and uniformly acy2*/gbxt)b 6cme o7dhcelerates to a final speed of 20.0 m/s in a time of 15.0 coe/7bh m2*tg)db 6yx s. How far does the car travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. It lands 6h.4b 7unvwd4x .0 s later with a velocity of 40 m/s. Whatxw.dbh v74 n4u was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is accelerating -.9 y ,fcr-e);basfhucd0qqxw6ylg 4vertically upward rg4y,c ceq f);0lu 6qw x9 fsbha-d-.yat $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body i+;ipre6pg4n o 8-n )wlt4bvre s found to be moving downwards at 27 m/s at one instant. If it continues to fall, one secotge6 8-)n il+pev4wn 4;rrbopnd later the object would be moving with a downward velocity closest to:

  95.39: A car starts from r cpg+968ind7 m )jbqntjdc6m7est 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 dropped from the top of a building strikes the ground w4 2m7h h6efgm:o+rjnvtp(y/ lith a speed of 30 m/s. Ahmgfm ol4 vjpre+67:(/ht2y nssume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.00 pp s dnb506edww.es+ m/s in the upward direction. What is the approximate velocity of the object onsp.5e wdbpd6+ e00s wne second later?

  98.14: How long mustcis;u tck:5m3 ixc(r/ a $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling obh09 tgzumo)z,5xk zk) (ot ae1ject is found to be moving downward at 18 m/s. If it continues to fall, h)zu9kmz0o,(xe kazo)gt51t 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 s u+- mh c18b+hzj-ubbjseh.2 puntil reaching the ground. What was the height above the ground from which the object wa-2+ hh bej+m .s jhpuczb18b-us released?

  11.06: A ball of mass =0m9 ny3f i5civ2.100 kg is launched 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 choices best represents the magnity f3in9vmi c52ude 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 it rise * :mztyli0qe/+w.(6qddfifb s to a maximum height of 12.0 m above the launch poi+fq.teq(l0d6*:mdiy f b wz i/nt. 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 plan ek6yq*,r/lv4:hy zpp e has speed 0.40 m/s two seconds after it begins to slide. Appyqvpry:4pz /k*l6he,roximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower with d7i tf4xa 97kwlqgy,2 a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s l7 4xwik 97aftydlq,2gater. 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 twi3o5tf acp5z* v5f2tqg ; qx/o rwn4t3lce the initial speed of another, how mu 5oqo p5ft/xatlc*qg3rn; 3w2fzt 5v4 ch higher will it be at its apex?

  02.30: A box falls to t 3aoo3bs+-bl723 -dgp1g pkogu j/nlghe ground from a delivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters kopgun7g/ 3 oj 2l o-gplsagb3+- 13bdto rest. How long does it take the box to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/s near the suvsnt4o. msm8pb 2mj -5rface of the earth. After two seconds what would be the direction of the displ. mt-28j4omp bnvs5smacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m,teowgt- a*k. r nal(ek9zy)(mut*m 1 5 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 he1)a(5egae(lr tz *mtkk-9m *uyntow.ight of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight i6l gjo1njn5,upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch pojj1onng65 l, iint. 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 ascsrk;yfy 8.+5ior 0su shown. After each bounce, the ball reaches one-half the height of the b.cyrys;i0k + fs5r8uoounce 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 its minimum sp 5y5nb pt3goje .o0v17w ;ua0ndt(grleed durv(l.gpg7e;5t0 3brw yj 0 aoodnt1 nu5ing flight. If 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 fromudp36w7a a at)qre( 2s 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 )qa7ud pe 6w3s(arta2the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking garage.*msnuhnb d2 0, One student suggested that to de,u2dsm n0 bnh*termine 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 adhu;o c wwt(i),qlzy9zg,h5 . straight line. Its initial position is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system, the signs of the initial p.q, 9(5w hzh,lo gyd)c; ztuiwosition, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulw5*5kficgf lbr 6 gd4(,pm: r)yuft3uled 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 that in changing direction that there is no loss of energy and that i ug5f(w y 4 )fd6*,:brpli53gtmfkcrut takes negligible time.

  06.13: A rock is dropped from the top of a tall towwu,99vl(wlz j8tz: .cg.od nd er. Half a second later another rock, twice as massive as the first, jdwz w 9o8,(zclv:n g.t.lud9 is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The carte5anjz-le+e70ss p3p5 ms; os comes to rest after tr-eeja 05 pnsse3 zso7+slm;p5aveling 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 0.5 m/s along a tractmr+,7) s jrmp ou0soj s65zbjx8*4mxk. 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. How far does the cart travel before comi ju z4oo5xpxs6s ,*r0 +7)rjbmms8t mjng to rest?

  08.03: A dog starts from rest and rukhl 7zbh9q9 ,uns in a straight line with a constant acceleration o b9h7q9 uz,hklf 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 hei- jn:k rtxj:m*)kc30cx ua2uught h above the ground. If the ball falls the first distance 0.5h in a time t, how much t: jnm0 ) ack-uk*cxujx2tru:3 ime is required to fall the remaining distance of 0.5h?

  10.38: Two objects both-a1ci;dp y ,wt move and uniformly 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; Oywpc1i;,a-d tbject 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 from 9f-)xss *dkfb/c qodr,; . pnua 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 object’s flight to the ground? Ignore air reso*n,;psdr9.- s cxf/)qdufbk istance.

  13.10: An object is thrown straight upward. The obj/v7v(jrusq vh)s*4/pbrczm o +3q : bject remains in free fall until it returns to its initial launch point. Which one of the following graphs could represent the velocity hv:bo/ mzjq )43+7p /c*(rv qrsbusvj of the object as a function of time during its flight?

  14.03: An object is dropped into 5j.:ve8;3o qu7s-wl,)gupn wbq vfrl,lho + vfree fall. Through how many meters does the object fall during the first 3.00 seconds of flight?. u,vlospl v;h qgown3v,uf5 )r-:b78q +wej l

  15.02: A box uniformly slides 7.50 m to rest across a flat sur9o 8w4swvdx r(face in a time of 12.0 s. What was the initial speed of the box when it started its slso4wwxd 9(v8ride?

  14.07: Starting from resthk t03em*a)yqe(lf/ cc j,o/7a9qcix, a cart uniformly 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 tim ef 93)hqoixa,cye* m (ac kq/0t/cl7je?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five seconds later1 jwn bmvb/srtuf5i*6bi ..i+, 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 during t/f+wbtsbr6 1 iu jv.m.i5*inbhe five second motion?

  14.17: A toy car initially moves to the righ/xh3;: kdk rpcp0+uupw*l*lei 3 -a ilt 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 average acceleration of the car during t*/hpdi33rpce*+ w-;l :0 kuil akpxu lhe five second motion?

  14.33: An object moves with constant acceleration startoa uf7/ -izmt 56ltd8ting 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 u tac ;bae46p62ce-bx vpward while in free fall. Which one of the following choices best racep xb;2v b6e6a4c t-epresents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the rightk(swfib*a +o*n) dmi(,7oc 21wbs tjh completes a 20.0 second trip 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 have2wtcis+is d,m*wbok nja *7bh 1 of(() during the 8.0 seconds of stage II?

  15.32: An object moving along a line comp;fjw . 8m8h.;nek 1/ golhkqdlletes 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 o oh;jhl kenk /.g.lf8qdw 1;m8f 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 dropped from rest. A ballukxp c5jb5 3*nb2cti 4 is launched straight downward with an initial speed of 36 mk2p5uc b*3i tjb 54cnx/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 racox.xm :f 7ym59o a2pfnn) kt r2fm0w9yes with a robot. The robot accelerates at f p f 72ao m5fmox9 rnwxyyk20m:).nt9$8.50\;m/s^2$ 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 lau 2xvdag704y)soda y:m nched vertically upward. 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 maximum height it obtains during its 4ys2da) 7a0ymv:gxdo flight?