94.01: Starting from rest, object 33wg86s eddt r1 falls freely for 4.0 seconds, and object 2 falls f3wdg8tr36 ds ereely for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a fina yy*zjps399rfl speed of 20.0 m/s in a time of 15.0 s. How far does the car travel during this time?yj ps9r*3zf9y

  94.03: A ball is thrown off a he) 1i;(ymflq *6dkzchr4: oweigh cliff with no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. Whatecwy *l4f dokh 6re);q: z1im( was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is accelerating vertically upw4czkld(+ sqn5 ard 4 s kz5ln+(qcdat $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is ge6+h f2x384lbl1knnze v 1or found to be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the obje2ehzne318 xo14 rkbg n+lfl v6ct would be moving with a downward velocity closest to:

  95.39: A car starts from rest and acci yl1ooi o36b.0 puthug7h*8lelerates 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 buil t os0 jyes;+sz4s9d-mding strikes the ground with a speed of 30 m/s. Assumet4js ss m -90dy+ose;z air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in f(d dio k6 wtf2f5,k95-edxoo rree fall has velocity 4.0 m/s in the upward dir5ofxok 6o59dd-die,fkt2r w (ection. What is the approximate velocity of the object one second later?

  98.14: How long must akeo(+ b0 a*veuy/zqo+ $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely fallnh ddr)r1/vs1 qfzi1 -ing object is found to be moving downward at 18 m/s. If it continues to fall, t- rq1dd )1ifnvs/hz1r wo seconds later the object would be moving with a speed of

  17.02: A small object is released fro em5fe) m2lt es93payzk7sv4,m rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground from which the object was relea)ef m s,e4sep792a3ytv 5z lkmsed?

  11.06: A ball of mass =0.100 kg is lq3+eouf01 jep aunched straight upward so that it rises to a maximum height of 12.0 m1p0 ufqeoje+3 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 launched straight upward so thaax k88k )g.pnu.ev)u st it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Appr.e)sv k)nx .k8p 8auugoximately how much time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined e6my39cxp;-6 eiaao oplane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does it travel in three m- pe6eaxi63c9a oy;o seconds?

  98.40: Coin I is thrown upward from the top ofol:lp0 mxgtwf356p 5 a a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s later.0 3f:6 am5xplot5gplw 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 direc 3p )7h(zj+ghgpi6h vz*jyw1ptly upwards with twice the initial speed of another, how much higher will it be at its apez+3hvgy(phi) 1p7z 6h jwjg*px?

  02.30: A box falls to the ground from a delivery truck travelb* -lc.a;jwx9h f +knging at 30 m/s. After hitting the road, it slides 45 meters to rest. How.+9 xbw;nc*-f kgj hal long does it take the box to come to rest?

  03.29: An object is thrown upwardep3 rpkwkt 6jwqma,,2e2: .dm s with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displaceme.j:tk 232ae k dwq 6mpwprm,,ent, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown v6o22tzfj6w5vpedh; y ertically upward with different velocities (1v, 2v& 3v respectively). 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 neglig6fjpzh;t2y25wde 6o vible.

  10.25: Two point obj 2bci hvzqje*j3cm/b. dq, m5:ects are launched straight upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H abovqqe*:.ch5/3d mz2 vj ci,mbjbe 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 the ground as sh3 vspa*d7 oz33s;9 q(by hjteyown. After each bounce, the ball reaches one-half the height of the bounce before it. jtsp9y( sa* 3bevdoz3h;q37y 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 free fal 9)zf2kci9 cu4yjtr7ol achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s9tfku c 2rcy z)7i9j4o initial angle of launch from the horizontal?

  05.02: A pebble is drocg/7ulss4(+ ndcme4shrrak (m-+ln(pped from a high vertical cliff. The collision of the pebble with the -(( cgn d4ak7c sner(4h/ul mss r+m+lground below 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 of1mpd 1r5y3xbybm 0 r4r 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 tb4x 5rrpy 3ry0 1dmmb1he 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 80g5q5j0 r ,cz isfnx jri3jj9position is x0 = -5 meters and it is moving away from the originr0j5 ifjg z,59jj8rn qxisc 30 and slowing down. In this coordinate system, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small pointejqughs9tic (u 0x.m(1 oz ): :2kwjcm-like object is pulled downwards 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 s uk:9c1m(:sei02hjtmj(x.ocg )q z uwhortest 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 the top of a tall tower. Half s))fim tp n)a0a second later another rock, twice as massive as the n m)ft0a) psi)first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. :.ikk*q 4pl.ifx8e i tThe cart comes to rest after traveling 1 m. The experiment is repeated on the same track, bek * ifkl :8p.i4tq.xiut 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 fikob9hai zz9 qh* 79/a track. The cart comes to rest after traveling 1 m. Thqoi 9hz/kz9 h a9if*b7e 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 line with a constan5.ol -.irsh2sc :7 ewwt fxs7lt acceleratii5:fsw.27xso er7.w cll-ht son 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 ea vdxv88v 9/kwithout air resistance from a height h above the ground. If the ball falls the first distance 0.5h in a time t, how much time is required to fall the remaining distance of v9d vex 8kv8a/0.5h?

  10.38: Two objects boe10u ixclw)rg0l5n t(zl7l ,eth move and uniformly accelerate 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 velocity of the two objects is the same. What is the ratio of the distance trav0l7 r xe) ulnel50gzltwi 1,(celed in this time T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown hodd*xwqff0m r; 5* 6qzy 8r4mjerizontally 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 f* rfz6dw ;xq qf0dr8jy m*m45eollowing 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 f 2sa8t k lr/x0l-rpa 6asrj1-remains in free fall until it returns to its initial launch point. Which one of the f lrrx18/pstf-6-a s2 krja0 laollowing graphs could represent the velocity of the object as a function of time during its flight?

  14.03: An object is dropped into w66v5zdjz9m6ei jwn 6free fall. Through how many meters does the object fall during the first 3.00 seconds j wn5dm v6j6e6 zi9wz6of flight?

  15.02: A box uniformly slides 7.50 m to res15lis9hc d82edyhoq;fwj 6gm* q2/dq t across a flat surface in a time of 12.0 s. What was the initial speed of the box when1gdh* f; h jq2sd26ymd/qowc8eiq5 l 9 it started its slide?

  14.07: Starting from rest, a cart unisskf ,76jbv:d formly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what :v6d sfsk,j7bdistance does the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/pz:co ; z/pgxvapc sf(*/5vr;s. Five seconds later, the car is moving at 40.0 cm/s to the left. Thfspp vzap/*cc:ogx;r v ;(z/5e 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 c ig1210; utred,lshu cm/s. Five seconds later, the car is moving at 0 u;d11 l,uthcisreg 240.0 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 cfpxml o)ky )z:f- k8r;onstant 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 initially is moving upward while in 92*.a(slwk4dug cp ezfree fall. Which one of the following choices best representul z*29sgwp.ec a4d k(s 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 s 2 4gf2,canruc-ck9+ (-2et te1eako bj )wczin two stages, I and II. The average speed of the entire trip is 10.0 m/s. For stage I,2ac rnb(cu2)t ,+2osekef9gcj1 -wt z- 4acke 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 sekr 1bs9zrs8 z q 8*hctnt.9wo2cond trip with an average speed of 10.0 m/s in two stages. During stage 1, the object moves with a constant velocity of 6. b on.1rs2t*hk9rczq8zs t9 w80 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 ild + e0qyro:icnmf50 k 8gwo21s 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, what is the speed of the ball relative to thenk8 f lei+2rgo0 c5qmyd01:wo rock?

  16.36: On a straight road, a self-driving car r b+3evm6n*rhx aces with a robot. The robot accelerates ar3 mb*+xh env6t $8.50\;m/s^2$ 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 vert6,f(5b jfl rpkically upward. The vertical position of the ball 0.70 s after release is the same as its f6rk5,l(fjpb 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?