94.01: Starting from rest, objecyd.vy)9d, sf,tk od 5rt 1 falls freely for 4.0 seconds, and object 2 falls ft),y vfdk ddy9.5or, sreely for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final speed ak(: g-jfjhd)/zu0 raof 20.0 0( khjj r/agf) d-ua:zm/s in a time of 15.0 s. How far does the car travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal velol)ot e haf 0ll,2;cnr*city. It lands 6.0 s later with a velocity of 40 m/s. Whalh20t,lef* c)o ;arnlt was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is accedaye87 gk n+5uw)s7wtf rpw .)nat55alerating vertically upward at n)t.agke 5u5pat+wy)r d7w785f wasn $10m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body i di )j43bqma6 8o.tooes found to be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object wod 3864)aeiqot objom. uld be moving with a downward velocity closest to:

  95.39: A car starts from rest and ,gfju 0;x veo //n+olpnyw we:2d02ahaccelerates at $0.80m/s^2$ 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 :1dp ;9ihx7j gpn3n icwith a speed of 30 m/s. Assume air resistance can be ignored. The height of the buildg:h9p3nijin;1x p d 7cing is approximately:

  97.09: At a certain time, an object in free fall has velociqt/+-/qwg v ahty 4.0 m/s in the upward direction. What is the approximate veqav+-htg/ / qwlocity of the object one second later?

  98.14: How long must ulsoe.: x+a*j a $2.5m/s^2$ 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 m w*6ihpqgy.ko1+4pfw/ 3td c1mtmz9s oving downward at 18 m/s. If it continues to fall, two seconds later the object would be moving with a speettfg hs1q3 yk 4. *+po1iwcmm6/pz9wdd of

  17.02: A small object is released from rest and falls freely fo6/er;6vsd s zwr 4.00 s until reaching the ground. Whate drwv6;zs/ 6s was the height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straig9y 1i ym c/ksx91sg;cght upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. When the basig 1c/;g y1xysm9c k9ll 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 launchenbg+b- pww ; wmn,6n5ed straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore amw ,nnwe6 wgnp-b+5; bir resistance. Approximately how much time does it take the ball to reach the maximum height from its launch?

  98.31: An object slidr vs ddl,3v1 zx/3vms1ing down an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does it lz,m3dd/vv3 v1r s sx1travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower with a sf+9i )ruqho2 q+zl c;gpeed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the toweriulhg;qcofz) q2r +9+ 2.0 s later. Assume g is $10m/s^2$. How far below the top of the tower does coin I pass coin II?

  02.04: If a ball is throww z9(wdp h6h ulrrrrjye6k,6/ru/ m3)n directly upwards with twice the initial speed of another, how much higher will it be at itsm)yr//(pwhrrzr9w66j6hu er u kd ,3l apex?

  02.30: A box falls tb28tkv ky3 e7ko the ground from a delivery truck traveling at 30 m/s. After hkk2vt3yekb7 8itting 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 ncmputx4znv0 ,0xn;-xq 1(nluear the surface of the earth. After two seconds what would be the dt0(nn m; qxcu u0,1-4lvnxzxpirection of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) arew.z4nl1l4d :r.ut m r)t gn0yk 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 4 wl: .ud m40)rzlngk1ry.ttn maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight upward withpv2 wxl3 (k/yh identical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If object 2 has masslkvx(2 pwy h3/ 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 cc+b+zdovey-rlr90:y- 7 yyn 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 trdb-zcv e 7+c9y+o-yy:n lry0ime between the second and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fall achieved its minimum sp1+9n (f ev8i.pp ro i qj)xx).9vuzdtyeed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s in9pj1 q(9yo) itv z.r+ ixpxd 8f)uvn.eitial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The c)b2e *goa; wzzvorqy b 5l8u(;ollision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resi8 b5wgz;vo)uq(z r;ye2*a l bostance.

  06.03: Three students we0 6cs).jq+ hz0keb -dy/k lfmdre arguing about the height of a parking garage. One student suggested that to determine the height of the garage, they simply had to drop hez0bd +fl 0.)yk ks /jd6-qcmtennis 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 initial position is x0 = j9w6e i s ,q0ix4bdoo+-5 meters and it is moving away from the origin and slowii,sw q06d9 jo4ob+exing down. In this coordinate system, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled downwzfn*b y6zbwl,di(q3 ls8o,:g ards 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 changi8,i,zb yw*l:gl s6fz b(q3ndong direction that there is no loss of energy and that it takes negligible time.

  06.13: A rock is droppyv zehziwikv a/*ll*ys3 r7 gqm;k -e92gi 83;ed from the top of a tall tower. Half a second later another rock, twice as massive as the fh /3rkza2y iiie m7v8gl9sql3;;gv w- **yezkirst, is dropped. Ignoring air resistance,

  06.18: A cart is initia:pf hu) 2fd3i8,qlhchlly moving 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 cart travel beforqh hf d2f3i:,pclu8h) e coming to rest?

  07.11: A cart is initially moving at 0.5 m kdgw 3;v4zq7s/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 movi ;vkd43wgq7z sng 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 line with a constant 1e0 19e ago7qcl(ywi /w:wohdacceleration of d/qi1hg07w(y: weo ae9 cow1 l2$.5m/s^2$. How much time does it take for the dog to run a distance of $10m$?

  10.29: A ball initially at rest falls without air resistance frfy9 +*i kw3gphom a height h above the ground. If the ball falls the first distance 0.5h in a time t, how 9k3 i* yw+fpghmuch time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly acc , -(+tnrwfwhoelerate 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(,n +ho -wtfrw; 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 thrown h6vmd/ 2 uasvb8wq8 q/tmft* b1orizontally with speed 10.0 m/s from a height H above the ground. The object reav8mwt/* smfb 6/dqq bt 2vau81ches 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 ssdsw9yx p/ d8e e:6zk6traight upward. The object 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 a69 6sxpd/d:y w8kzee ss a function of time during its flight?

  14.03: An object is dropped into free fall. Throbs;s 1dme5y+ig. cu2qugh how many meters does the object fall during the first 3.00 seconds of flightes.u 25dsqiygmbc; 1+ ?

  15.02: A box uniformly slides 7.50 m to rest across a flat sunpaz8 me;7)b6awa5n z rface in a time of 12.0 s. What was the initial speed of the box when it startzaw mnza6e7 p5 )b;a8ned its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed/7gtf3yw z/ey of 7.60 m/s in a time of 3.00 s. Through what distance does the cart move /3w7fe/zygty in this time?

  14.16: A toy car initia8shbje;.jy*p1b t ) kgxq7k6dlly 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*)bd1kj 6 hbqgt8 7y.p;sxjekplacement 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 cmst u2/zdr-0 bn/s. Five seconds later, the car z-n2 b rusd0/tis 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 the five second motion?

  14.33: An object moves with constant acceleration starting with vel z( ,qyqpp(k*hocity $v_0=5.00m/s$ and ending with a velocity of $v=-1.00m/s$ 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 zz.(msd klgkla8a79 -eo6ts+. Which one of the following choices best representsla da6 zm9(gs kez+.-87ok slt the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 second trip xt xjj;k- 21(d,s jabvin 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 h2(1; xbjdkst,vj x- jaave during the 8.0 seconds of stage II?

  15.32: An object moving along a line completes a 20.0 second trip with anwmay 1pff us/h5:a/6o9i birb pg;2 r* 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 a1 2ypi*orb9ufsg /fwba:h mi; /56r pmust the object have during the 8.0 seconds of stage 2?

  13.33: At the top of a high clifnn*vx q*q d+k)f, 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 initially dropped rock, d*x nq)vknq+* what is the speed of the ball relative to the rock?

  16.36: On a straight road, a self-driving car racesd*3*ze,b ndyp3q xo ag2w:pt* with a robot. The robot acceler atpdp2zyx3: , bgen3od*qw**ates at $8.50m/s^2$ until reaching its maximum constant speed of 15.0 m/s. The car accelerates at $5.60m/s^2$ 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 position+r.atv1 i-*6rih i9zecay. dv of the ball 0.70 s after release is the same as its vertical position 4.10 s after its release. At whatare6 .vdct1zyira +hv9i.i *- time is the object first at a vertical position that is one-half of the maximum height it obtains during its flight?