94.01: Starting from rest, object 1 falko7(5u 8nz-pw 3q k/dss aip;jls freely for 4.0 seconds, and object 2 falls freely for 8.u/osqj3ppz 8 a; 5ik(wk s7n-d0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final speed od p lv0uxked7b-)mcdeaqkd+0,js 24( f 20.0 m/s in a time of 1 p2bk0 +7 0ad(kvmseeu)jl ddxc,q-d45.0 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 es;4wp mofmza9a:w 0 /6.0 s later with a velocity of 40 m/s. What was the in/4 pmw0sefaomzw; a9 :itial velocity of the ball?

  95.27: A rocket near the surface of the earth is acceleratinmkl 8otq -rt-1g vertically upward at1-kt-rt q8lo m $10\;m/s^2$. 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 moving4kba 7;o:ysfpobszw 39 3.msj downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be movin:a3zmj. fs sp4;b yo3bw97oskg with a downward velocity closest to:

  95.39: A car starts from rest andw-75 g6mj u )f4f6nkxddqs9np 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 wit.ta1,m/jy2k i68 c dbtcutr6eh a speed of 30 m/s. Assume air resistance can be ignored. The height of the building is apprdmj/uetc2 ,6 ra86kb 1ti.tcyoximately:

  97.09: At a certain time, an object in free fall has velocia*,yb4 t k7p 3aj -ecm)kbkeo3t-nx)pty 4.0 m/s in the upward direction. What is the approximate velocity of t bktyj 7*n )o,ktmpacxe-4-apkbe3)3 he object one second later?

  98.14: How long must awqn y15g5ox7 e $2.5\;m/s^2$ 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 tot z2oo 0ft)d9vva5po( be moving downward at 18 m/s. If it continues to fall, two seconds later the object would be mov9 5vfao2)oz0o tvdt p(ing with a speed of

  17.02: A small object is released from rest and falls df wyr/vqf 4(4freely for 4.00 s until reaching the ground. Whavwqff /d4 (y4rt was the height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is : vz 4h fwq3f4v qpp3 l6uejk9nfgw84/launched straight upward so that it rises to a maximum height of 12.0 m above the launch pof49vqwpfp3v 3l4/ekqg h4 8 :u6znfwjint. 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 straight upward so that it rises tqwfy6z1u+kn l; *i/m do a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much time does it take the ball to reach the maximum height fr1f/ w6qly*;n kzdmu+iom its launch?

  98.31: An object sliding down an inclined plane has spm0vj 4pyqm+ aqwhe-0*eed 0.40 m/s two seconds after it begins0q0y4mw-eqp maj *h+ v to slide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward a23tpykfx 0o*from the top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zerft2p oxk3*0 ayo 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 directly upwards with twice the initial speed of/b i3fk(i7gqx another, how much higher will it be ai(xfbq7g/k 3i t its apex?

  02.30: A box falls to the ground from a delivery truck traveling at 30 m/yorxqd0sm8b 6.irh.r*d8 (o x s. After * xdx0hyrr6.rb.8omd8sqio( hitting the road, it slides 45 meters to 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 np,a)8;*g rpc)zsh dw3ux-k zb ear the surface of the earth. After two seconds what would be the di *)pcd hs grpz-ab8,xu) wk;3zrection of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vertifb34 4)hwmt+ k(kfh odtzx8x*cally upward with different velocities (1v, 2v& 3v respectively). The diagram ind43dk*k4hb(ftwxof +zxm)8t h icates 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 lqlmo5:v 7j+s*z4 shvxy 7:tbmb-oo 7xaunched straight upward with identical linear momezsqb o:jtlm:yvv7ohom 74+b x-sx* 57ntum. 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 thhq.v .*s ;addie ground as shown. After each bounce, the ball reaches 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 ;v. i.dqshd *abounce?

  16.21: At 1.94 s after launch, a projectile in free fall achieved its minimum 2vtp+e e yefuvk4d(4 3speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s ini 3ef vteyp4u2 vd4k(e+tial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cjbjo6+. y+aeg( bvd ; k;kk1mazy7l3xliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is y; bj6(a1kzdgjy3;x .kkmo+ l+veb7a dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing zo-ddn(70hkkabout the 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 of the tennis balls. If the time for the ball to fall was 1.4 seconds, apoz(d0kkn7 d -hproximately how tall is the parking garage?

  05.07: A snail is moving along a straight line. Itsjnnwnsk8zy 0;i 6uo4- initial position is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate inwyon;ku j860 s4-nzsystem, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like ob*cz461m:rdt2qsphv: 0 i wqq ur0zh* nject is pulled downwards by gravity (down the plane of the page) but is constrain:*iquq 1vzr2htw0 pdqh4 :6 zns 0*mrced 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 negligible time.

  06.13: A rock is dropped from 357p:mha2p dl e8t;eqac;xbu(1ofoz e7zm8ythe top of a tall tower. Half a second later another rock, twicel7 ;q me7tdbzp5 :8e o2aeu3azxpfm;o c8yh1( as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The cart cb*6otg6hbmp 4omes 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 c66g*m 4o hbpbtart travel before coming to rest?

  07.11: A cart is initially moving at 0.5 m/s along a track. The cart co)oadzuaj.r ln6/s jhi 4,w .*rn(vwk(.g mdg0mes to rest after traveling 1 m. The experiment is repe (sjlg6nmk./rhvw. 4(zdd, rju.0a*ao)ng iwated 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 straightmly8;82tyzj d line with a constant accelerati z2y8mdj8;tylon 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 wit/3gy ;lmu .us j:mdrx:hout air resistance from a height h above the ground. ;yus/3d:julmgx.m r: 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 su5 z)+wzphpe/ :: ev*;dhuynto the right. At time t=0,the objects are at the same initial position. Object 1 has initial speed twice:w+ : zhvhsy)5d* /unpue pe;z 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 that traveled by Object 1?

  12.26: An object is thro(t wusmk m95oz.9s/pown horizontally 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 object’s fligukw5 po(tzsm 99sm/o .ht to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward;5vz4s0f 6y z duq*asw. The object remains in free fall until it rd 04u6qafv5*zzwss; yeturns to its initial launch point. Which one of the following graphs could represent the velocity of the object as a function of time during its flight?

  14.03: An object is droppeh6 u)uj(x. otfw3gl dyy.sl; 9d into free fall. Through how many meters does the object fall during the first 3.00 seconds of flight3hj()f yo. 6w u;xtld.suyg9l?

  15.02: A box uniformly slides 7.50 m to rest acrorh 8f:at nrk1u/:uya /ss a flat surface in a time of 12.0 s. What was the initial speed of the box whu1yn 8a/rkfra ::uth/en it started its slide?

  14.07: Starting from rest, a cart8d y h,g2fbbw- uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does the cart move inb8,y2 -hfgdb w this time?

  14.16: A toy car initially moves to the right at 60.0 ce* 2:cu+ucakl:hm g /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 thue+2 ckcg:h: */ lcmaue 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 seconds lat4;zfm7y( p gqner, the car is moving at 40.0 cm/s to the left. The total displacement of the car dgm7; q4 pn(fzyuring 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 startin q95x y4jqqax)g 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 upedcpi(2 ( q *sgu-3omyward while in free fall. Which one of the following choices best represents the directio -*3iquesgm c( o(yd2pn of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 second trip in two sti5krx. 3ea*6eqdum (eg*i b 3zages, 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 objeck3mrgiu(3e*daeb xezq* . 6 5it have during the 8.0 seconds of stage II?

  15.32: An object moving along a u/fl uxsg(1ay xiz zjfv/q;( :s2c)(nline completes a 20.0 second trip with an average spz//as)ql;g:sfifczn xuy( u((v 2x 1jeed 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 8.0 seconds of stage 2?

  13.33: At the top of abr9 0 pzd)3zpb high cliff, a small rock 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 further than the 3rp b0p)z bd9zinitially dropped rock, what is the speed of the ball relative to the rock?

  16.36: On a straight rni)6qzj)pv*v oad, a self-driving car races with a robot. The robot accelerates at vjq)*zp)v6in $8.50\;m/s^2$ 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 verticarrld.nt2arbdc* 1j+ yg 7 .cb/l 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 mg21 .b arln+. cr7yc*/jrtddbaximum height it obtains during its flight?