94.01: Starting from rest, object 1 falls freely for 4.0 seconds, and object 2 8s*zdb/p - juwfalls freely for 8.0 seconds. Compared to object* j/dws-8ub zp 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a fin wy0*)amc /. p- xibgcri7hk9nal speed of 20.0 m/s in a time of 15.0 s. How far does the car i0axy.*pbh7 )k c/ grnw-9c imtravel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. It land(va 8g gsff3(zs 6.as(gfg 8f3(zv 0 s later with a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surfvxyho7,ke f./ ace of the earth is accelerating vertically upward avek/7xy h, o.ft $10\;m/s^2$. 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 mg*td0h5p./dzzo ) ns noving downwards at 27 m/s at one instant. If it continues to fall, one second later the object wouldd0/ztz hnnd)gso p*5. be moving with a downward velocity closest to:

  95.39: A car starts from rest and*auuhc9h0 nur68en)0fec 4mj 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 t6tk r:f7af /-vy:xmeb he top of a building strikes the ground with a speed oa-t :b6 ke:/xrf fmyv7f 30 m/s. Assume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an oft :z 2 k-i+g9w-+tiwx5nmqvlbject in free fall has velocity 4.0 m/s in the upward direction. What is the approximate vel:5wtnl+2z-tg9 +x-vim fq wkiocity of the object one second later?

  98.14: How long must o-dj: 6yfp qm-jr-mbb2pfg*/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. tr96 lx.bbxgkba(8x object is found to be moving downward at 18 m/s. If it continues to fall, two seconds later the object w b9 ag6klbt. (xxbxr.8ould be moving with a speed of

  17.02: A small object is released from rest and falls freely for 4.00 s untihu2 ct)6or2cf+7oord, tv0 7)flvtt;ojynv 9 l reaching the ground. What was the heif vh 0o,9 o72cofctnvjuv t62l7t+ )otdr;yr)ght above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is laqx h ;cojf nrn.i2*lj)h j49z6unched 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 ojrjlnc.fq x ;n9 6 ojh)*hz4i2f 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 risesn aq6;aob;jxre c- )+y*dr5my to a maximum height of 12.0 m above the launch poin;c)5x6*aar+rmbq eo d- yjy;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 plane has speed 0.40 m/s two s4e: lz/ ikltn8econds after it begins to slide. Appr8/l4ktz :ne lioximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-t(d0tpwn k+nldi2 :l h2y/+ cw0jfhp1 m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of they:0nd tf pptw/l h2h 1jl2cd+ wk0n(+i 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 gf8z+gppg 0tc4zp;h/ speed of another, how much p0c tgg+4 f;zp8 z/gphhigher will it be at its apex?

  02.30: A box falls to the ground from a delivery truck traveling at 30 msbcb5 u7*gbf 9/s. After hitting the road, itcgbub 975 bs*f slides 45 meters to rest. How long does it take the box to come to rest?

  03.29: An object is tahuna1wk9; :a.1ghyco*ls2*2d za5 bgr ex(zhrown upwards with a velocity of 30 m/s near the surface of the earth. After two sew;1bhoxr5e9* u (sa1a zn galy.22h*kd zcg:aconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of differez2.8,zmx mar8jn 1tvxnt mass (1m, 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 highm2 vnx axzt, jm8.r18z to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are la ct: tyhfb*if(-ne7s(unched straight upward with identical linear momentum. Object 1 has mass M and reaches a maximum height t(h*t: f7fy -bcen(siH 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 bouncbazi 7sh/5eu:om0fvh as, .-tes on the ground as shown. After each bounce, the ball reaches one-half the height of ttfhiouv :.h/se z 5,aa0sm- b7he 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 projectile in freen(fw) .-vflt 1y0ytqm8- czls fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s infsy f) 0 l(m1n-t8zlqc wytv.-itial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cs6hy7yp7 (vgc liff. The collision of the pebble with the ground bely6 s v7hcgp(y7ow is seen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking garagsa a2f 07w00lg3-vuxk wsd4vk e. 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, approximately how tal4kwwgf70l a0-vsv k3xd0 2a sul is the parking garage?

  05.07: A snail is moving along a straight line. Its initial position in-k6 5jgiwad/ljo ;,4 ptyjz(s x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system, t d/lw jjyko5z-,j6a pn4 ig;t(he signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled downwaowp i,qy/3x( drds 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 ty,ox /d(3wipqo 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 a tall tower. Half a seconp otr7+ptwbq1-ev*mn b0h /v6d later another rock, twice as m7p +q 6vp1wo*r/vebntmt 0- bhassive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a tracvg 2/tey/8;.b,d4s4n9hrn j srzji ip k. The cart comes to rest after traveling 1 m. The experiment is repeated on the 9ynb ;4g j2srsijp. rn/eh4 z8/itdv, 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 --0mx( pk zbvsc9p6vetk bh-)x+k q;ltrack. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but noqlz cbp+h ;tkespvv)mb 9k -60--kx(x w 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 line wi30,h- vlwikgp;b7av zth a constant acceleratw;g,3hz- b lap0 ivvk7ion 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 byjhi,g- dmogoxh-v cr4xhg05f*+1 - at rest falls without air resistance from a height h above the ground. If the ball falljxh-g g v1-0 od*4-riyfb+g,hoxmh c 5s 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 acceler4h kw36wnj/rp ate 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 on wk/46hjp wr3ne-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 a heii4v smku *7 ud,2vqey )cqao 6--.avgcght H above the ground. The object reaches the gruq2)o4ya 7u*cqeia-ckv-s dg,mv 6.vound 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 mqxpt-/(; smqstraight upward. The object remains in free fall until it returns to its initial launch point. Which one of the -/qs; mqt(pxmfollowing graphs could represent the velocity of the object as a function of time during its flight?

  14.03: An object is dropped into free fall. Thr)(ymtmn::k)usk(7 nop l( vwrough how many meters does the object fall during the first 3.00 secondl novm (u:ptm(7)ky s k:wn(r)s of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface in a tidkl mdqc/xm 5+9i2hd2+vyx w -me of 12.0 s. What 5ykvmci9xl 2xdh2dq-dm+w/ + was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly acceleq/jkcx(+ch + n khg4e5ctx)6h rates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does) k4 khncethgc6(+q/h5 xc+j x the cart move in this time?

  14.16: A toy car initially moves to th6.87r m whvip(o zjjc/e 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. Which one of the following choices best represents the magnitude of the average velocity of the car during the five second motioi pz8.rwvc6(jj/ m ho7n?

  14.17: A toy car inir3 10xyyo isx7jte: 6 f+s5dovtially moves to the right at 60.0 cm/s. Five seconds later, rs vf0dyxeooysx 1tji3:+ 657 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 the five second motion?

  14.33: An object moves with constan nnsi(.mtot ,khnuv-i7,s.p :t acceleration starting 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 initi gu ,1z vi-beh7jfb5q42gwr0 m2o e8xjally is moving upward while in free fall. Which one of the following choices best represents the direction of t785w uijm4b0gj-1g qheo2z ,r 2fvbex he object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 second trin9 rq 7set3bm5p 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 have during the 8.0 ns9e r3b7tm q5seconds of stage II?

  15.32: An object moving along a line completes a 20.0 sec4a ezvenw ;j55ond trip with an average speed of 10.0 m/s in two stages. During stage 1, the object moves with a cv4jz;e5en5 a wonstant 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 clg 8,x 4(*wzcvll(imukiff, a small rock is dropped from rest. A ball is launched straight downwa,iv4gll(8 wxk m*cz(u rd 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, what is the speed of the ball relative to the rock?

  16.36: On a straight road, a self-driving carim(t09 f qtx)k uj.ov5 races with a robot. The robot accelerate q90u5ot)vj ix(.mfkts 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. r4vp7dhm1ope n+wxc :w9ar 0 (The vertical position of the ball 0.70 s after release is the same as its vertical position 4.10 s after its release. A4 +w perdcwmxar7ov9(h01:npt what time is the object first at a vertical position that is one-half of the maximum height it obtains during its flight?