94.01: Starting from rest, object 1 falls freely for 4.0 seconds, and object;vi: mqwx )bd5 2 falls freely for 8.0 seconds. Compared to oqd 5m b:;vi)wxbject 1, object 2 falls:

  94.02: A car starts from rest anr o/o;3xhsoz9d uniformly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travel during this o/oho9;z3s xrtime?

  94.03: A ball is thrown off a high cliff with no horizontal veloe7 (r*e d)o y: jehhlylog8 jiw23p-)ch;qw+z city. It lands 6.0 s later with a velocity of 40 m/s. What was the initial i p) z2qyg*(;h:y) le orwejh3e-jwocdh7l+8velocity of the ball?

  95.27: A rocket near the surface of the earth is accelerating verticall9(vv2+mnwp vdy upward d9n+mvvw(p2 vat $10\;m/s^2$. 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 movi;cc4m5yon uja(iq*o 4ng downwards at 27 m/s at one instantqoj5 y(na*c; c uim44o. If it continues to fall, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and accelsp;ne 7f n3u7ierates 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 groun+o/mj :.c4ae mrirtr 0s, yk/jd with a speed of 30 m/s. Assume air resistance can be ignored. Th0. yr+a4:m/jc,i/rj s erk mote height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/s in the upwn5yg;9rc;vc6h-ae e eag6e aye9h-rc ve5;cn;rd direction. What is the approximate velocity of the object one second later?

  98.14: How long must a upjg4 8dnz9 on-r1ab2/ex z7f-wixy/$2.5\;m/s^2$ 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 18v sfif.4++hztx 3i (cs m/s. If it continues to fall, two seconds later the objec4fvzf+.i3 xs(icsh +tt would be moving with a speed of

  17.02: A small object ism4gb5 dd wvpq;( vkfpu5(c0(a released from rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground from which the object was released? (bdu p pv0;fqm (kvga54c(d5w

  11.06: A ball of mass m0iab (bsxbvz( a)lzcw (l6x 8,*vo(y=0.100 kg is launched straight upward so that it rises to a,cml(zbb(* zoax0( w)6isba(yvl x v8 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 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 launchco/fw w;hf,v6n .:o43ojgcxc ed straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximat:;c6 hfoovwoj,w.3 /ngc cf4x ely 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 has speed 0.40 m/s two 2ldhbs z)yxp( amz6qufe .0oi0 cj(th6 (6(jrseconds after it begins to slide. Approximately how far does it travel in th 0by(aoh mzec)ri(6lj0 qj (xt(dzfu s26ph6.ree seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower with a :sfg4.a6w mcd speed of 15 m/s. Coin II is dropped (zero initial speed)w. sfamdc4:6g 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 7.*xc tseq 909fjcqwbno vr()the initial speed of another, how much higher will 9*9jo 0rx c7tfeq bqvs(c)nw.it be at its apex?

  02.30: A box falls to the ground from a delivery trucauv e - 9wgffnou9:8v7k traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it t9 a 8oe:fv7uug9-fwn vake the box to come to rest?

  03.29: An object is mgip+5 z( 4jdythrown upwards with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, velocity and accy(5+z i4m djgpeleration?
displacement velocity acceleration

  04.10: Three stones of :igj5nu5c;z v4 dyz: tvnds(2different mass (1m, 2m& 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectivelc n;ydznjgtz5v4d :2uv(:i 5sy). 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 objenaqg()dh+t x2cts are launched straight upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If object 2 (d hx2 gtqan+)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 shown. After each b gykj 0flf3q: lx 1hz3dld)wf h2+,r7w )2jykyounce, 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 betwe22 qhdg3wxy,jkd0jl l 1lryf:zwh)73 k+f y)fen the second and third bounce?

  16.21: At 1.94 s after launch, a t7 c,f;yh a*o3,s rjoiprojectile in free fall achieved its minimum speed during flight. If that minimum speed t7 ,yr*jhi3a; o,foscwas 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 cliz6ovojmue p)6 *b*a,tff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebbzo*b),umt6v a*e 6ojple is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about hzmo9o /4e1r mr, cam8the height of a parking garage. One student suggested that to determine the hee1 ar4r8o mmho9/ zm,cight 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 a straight line. Its g27mcf* ev;2ug w6e0ovcawn.ygog 0 :initial position is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system, v;:mgag2 nf70*yw cg cov20u.o wg e6ethe signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled downwards by gravity (down the plan9ln88tphoe 7q e 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 eneqp ot7 e9hl88nrgy and that it takes negligible time.

  06.13: A rock is dropped from the topp cj2xm i3++vb of a tall tower. Half a second later another rock, twice as massive as the first, is dro+3+jb2vi mxcppped. Ignoring air resistance,

  06.18: A cart is initially movi5 h0zv om+hi-8bsbx,nn hz c58ng at 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. How far does the car mhzvox n+zh5bbi85-80 sc,nht travel before coming to rest?

  07.11: A cart is initially moving at 0.5 m/s along a tst h+:l3k-o )z rwapp .d607 jffxb0ug*dgk)jrack. The cart comes to rest after travel*+7 julxdg )pa)b 6 kkjshot: -zpff00.rg3dwing 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?

  08.03: A dog starts from rest and runs in a straight l ogat+,4zn3/ sr6lrcgine with a constant acceleration oflo+ r3zgnsc6r,a/t4g 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 resistg55 dz)baj v v;;+rbbmance from a height h above the ground. If the ball f+rgv d bv ;a5mbb5;)zjalls 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 accgm8 p3b0qm 9f)hmxw2 adg-d6c7qkbt; elerate 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 velob3 d; -)6wbfpmmha7 82tqg dmg0c9x qkcity 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, y-k 6lx2s1fgki4am w with speed 10.0 m/s from a height H abovaklwg 4-1 yximks,2f 6e 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 resistance.

  13.10: An object is thrown straight upward. The objecuy lo)wf2b7w;u ) q*7 lpfwsf6t remains in free fall until it returns to its initial launch point. Which one of the following graphs could represent the velocity of the object as a function of time dur *wus7w;buy276fpf)wol l fq)ing its flight?

  14.03: An object is dropped into free fall. Through how many meters doesgrb7utetqy90s 3g) 4+ l sgy:4 iasky, the objt ag47s + qyetrygs, 9i4yblgk) u30s:ect fall during the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface ik2 ;hh*l 3rjnrc)zv60ko4lytn a time of 12.0 s. What4z 2hvkor lyrj)30nhl*t6kc; was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accele .+frq iqysul6v 0zbhu,0 36fbrates to a speed of 7.60 m/s in a timezbrqsi0u.v fqyl6u6f+,hb3 0 of 3.00 s. Through what distance does the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five seconds :g mwyt29 d/lv-c 9wqclater, the car is moving attvc9md wq:9 lc wg2/y- 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 the five second motion?

  14.17: A toy car initially moves to the right at 60.0 cm/s. Five seconds lawus6:05o )zdtrt cv; nter, 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 t)z 5 rn06wtsud o;vc: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 wizl -k)d b-icm;th 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 ,cjs*nr(ij+g xt 6 +m3w srn5jthe following choices best represix5s( jsmg6n+ n +r3,jcr*t jwents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right 4oj;lmad .u5s 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/sj 4old5ms; .ua 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 completes33/jhtds2mne ;j mo.n a 20.0 second trip with an average speed of 10.0 m/s in two stages. During stage 1, the object movest/ mdhsj3j ;2nm.en 3o 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 dropped from rest. A ball i / eytf 08au)pset;-xls launched straight downward with an initial speed of 36 m/s a0t8 /ep;) l-a xtyfesut 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 races with a robotcs-ph e 0san+7:gnn 8bu6 9njl. The robot accelec 7:nh lusn pe6+n9- n8gjba0srates 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 vertr ylmadn:)/-dk* ,sy( j zy7wjhy8ue+ical position of the ball 0.70 sys+w 8 l*7ya :u(rykn,e)dmhzdjj y/- 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 flight?