94.01: Starting from rest, object 1 falls freely for 4s w :csem qs6rq8803hu.0 seconds, and object 2 fallscsmhu8s8q sqer6w03 : freely for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformlk)0 dyt/x b*d )-v** qxw hr,/cfvxaeiy accelerates to a final speed of 20.0 m/s in a time of 15.0dr*0 xw*-*vth,/ dqvy)kb/a x)c feix s. How far does the car travel during this time?

  94.03: A ball is thrown x5+ fwm+mnni d.-g j8ioff a high cliff with no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initialmn i+j.85 n+- idwxgfm velocity of the ball?

  95.27: A rocket near the surface of the earth is accelerating vertically upwac;4 nzvde) 2wfrd fve ;2d4ncw )zat $10\;m/s^2$. 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 sw(m4 )aszut.downwards at 27 m/s at one instant. If it continu (4uzswmas)t .es to fall, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and m8qr x8paem+;26iy l p.q yiv*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 buip mmicd luyg5beud)t,)q 6 2.4h(a5xklding strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of the building is appcy kma))5(dhd qgm u.6i x,epb24 ltu5roximately:

  97.09: At a certain time, an object in free fall has velocity xe 9izi0 *cf-tqtf*y/4.0 m/s in the upward direction. What is the approxiq-* f ii/ec tzt0fyx*9mate velocity of the object one second later?

  98.14: How long must 24u /h36cjvb w 5utf(jnhz5,ovghpe 1a $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling oo-;/(mqb4 rqfyyp.scbject is found to be moving downward at 18 m/s. If it continues to fall, two seconds later the object wouldp;r-. /m(y4coyqb sfq be moving with a speed of

  17.02: A small object is released fromk8ewl:; shlej9vo, np2d3ot) rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground lw8 o,2o)dt nelk3vp es;:jh 9from which the object was released?

  11.06: A ball of mass =0.100 kg is launczi64:0c ml/davayrl, f ha3m,hed straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. W m:dcf/aa h,i 3 lymv046a,rzlhen 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 launche;;c5);ot( vqsl)umfsowwk 9r d straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximwo lr) uo; ;) 95m(skwvt;sfcqately how much time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an -f-gso e0g4 y(b9larz inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximatye-s-94(a zgl0br g foely how far does it travel in three seconds?

  98.40: Coin I is thrown u1zqh9v g10 rxzpward from the top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial0vx gq1h9zr z1 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 with twic3 j(6 mwbcac7ce the initial speed of another, how much higher will i7 cb6jwac3 cm(t be at its apex?

  02.30: A box falls to y07j ef(rm b48w2l+sszcb aj+ the ground from a delivery truck traveling at 30 m/s. After hitting the road, it slides 45 zcjm20s( r7jw +as+8ley f4bbmeters to rest. How long does it take the box to come to rest?

  03.29: An object is thrown upwards with a s r .f9pbw(,tiuh/ x1wvelocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, velocity and accelerati xs hfi,wut.p (/1bwr9on?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vertical 9nl)q8y 9c q9btvk7gyly upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone.9q lc79kvq9y) 8gn tby Rank from high to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight upward with identii)va c0,4y0xr w r6::z1naopfl6mslvcal 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 a:fs)w:00 x1l 6 lrz4avpc vna,mr6iyobove the launch point in terms of H ?

  04.28: A rubber ball bounces on the ground asxl hf z2zmu0-7p1rd gyj 812pd shown. After each bounce, the ball reaches-rg1x82f ldyzp z 12d7p huj0m one-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 project w9uy.vm9krr4v l3)lcile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/ l3umrlrvcv 4ywk 9).9s, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. p8(m0ytktlf8.dxb. vThe collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speekl .b0 v8yfd.xp(8 mttd did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking *vx 9glah.*(; 03ebxno bqefsgarage. 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, apn3sleq09bhx xa* ;.fobv(*e g proximately how tall is the parking garage?

  05.07: A snail is moving along a straight line+1)qh s)mujcf. 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 position, initial velocity and acceleration, respectif +umq))c sj1hvely, are

  04.38: A small point-like object is pulled downwards by gravity (down i52/udwtsj-fn-6d o r 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 tisrjdft625wdo u - /ni-me (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 the top of zi nva. z 51 sqserp/kb40q7f2husiq 6--s0 hca tall tower. Half a second later another rock, twice as massive as the fir402birq ss 1c -sfqhu/ hp.- e76zqsv0nik a5zst, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s ala3 6xvv oqx1.fong a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same trac3 vvq f16o.axxk, 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 track. The cartzo8aqb3xf-,0d(ktx8l wr7q9 uofd x- 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 f0ktx,oq93 a8b8xxddzf-q (r7 wuo-lthe cart travel before coming to rest?

  08.03: A dog starts from rest and runs in a strd+c(p :aj tnmg 01vof3x:x ob6aight line with a constant accele fxb3(xotg6n j10 oamv:pd+c:ration 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 rep8r-b8mepj ksy0 oh53/jzp5j st falls without air resistance from a height h above the ground.pj5jro0k/b8 e-3jh5ymp zp 8s If the ball falls the first 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 t;si1 i8 ug1vqh.f 4egeime 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 h.ei48ge;qug1v i f1 sthe 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)ywfpux 8u g3* horizontally with speed 10.0 m/s from a height H above th*)8uf xpyugw3e 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 resistance.

  13.10: An object is thrown straight upward. The object remains in frea m+7d0 mfj/t.dr4 ld h9cj:fwe fall until it returns to its initial launch point. Which one of the following graphs could represent the velocity :tmh9c4w/jd0lj f.mfd+ 7darof the object as a function of time during its flight?

  14.03: An object is dropped into free fall. Through how many meters does the o-c oy,u8rcw;zbsc 0v; bject fall du0 -;z8oyc;c,wrbvsu c ring the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface itq *wpfvoc , 9,2s;n0.lgywky n a time of 12.0 s. What was the initial speed of the b,nqv.w *,o;st09yyp wcfkl2g ox when it started its slide?

  14.07: Starting from rest, a cart u/ iua07xrfqy4,tjc b0niformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance doe0xryi0/ fuaqb4j,7tc s the cart move in this time?

  14.16: A toy car initially moves+g;dthwqpeb7jp0 k fid1jb :;1)7fdd 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 time is 10.0 cm to the left of where it started. Which0kqj7hi;1pd+bbjp):t; d w f1d7gd ef 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 move775.uzmlbk 5m t7cwwes to the right at 60.0 cm/s. Five seconds later, the car is moving at 40.0 cm/s to t5ut 5klzemm.ww7 7 7cbhe 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 moves with constant acceleration starting wit3a8 tg 73ov5syw f pl(a9j;xclh 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 nc;ss6 f(sw70 y*kfkh is moving upward while in free fall. Which one of the following ch(n0ks7yw ck*ffssh; 6oices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 2068m 5uvwc4y zk nt+qjppgtw).pq743v .0 second trip in two stages, 5+pmc p)vtv4u8w n7.6pq wqt4 jz k3ygI 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 the 8.0 seconds of stage II?

  15.32: An object moving along a line completes a 20.0 second trip wvujh-8ra ls2 cm:e/t 5ith 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 fa/tsjm5 huv-c 2r8el:or 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 roc5;x 2z*2u/u1imymkb ss) woxq k 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 fallen 28.0 m furthe)2uksm sy w1 5u/i;*2oqmzx xbr 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 races yb.d9vqqkz 3dq 08) eheil7n1 with a robot. The robot accelerad b7.q8 kd3 qh ie9l1v)ynqz0etes 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 upward. The vertical posima ,p7fvdim: l;n;g (qtion 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 qdvfgl, m ina7:(m;;pit obtains during its flight?