94.01: Starting from rest, object 1 falls fr22wl h.ul3v+cy*hh* wo v.iipeely for 4.0 seconds, and object 2 falls freelyyhi3*vw+iopu2wc2 . .h * lvlh for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a fizzkx/ .*w.imse7mz/u1d ii7 fnal speed of 20.0 m/s in a time of 15.0 s. How far does the car .z/ei7u7i1 iw k*mzf sx/zmd. travel during this time?

  94.03: A ball is thrown off dg8j)co3fpy+k d /c/sa high cliff with no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was tg3yjskp8odd /+ c/ fc)he initial velocity of the ball?

  95.27: A rocket near the surfacei (tmra)cfv-5tkx2ty n*17m .h nw2or of the earth is accelerating vertically upward a1hr tfo cm-k7*mra(2nxnyv.i 2tt)w 5 t $10\;m/s^2$. 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 moving downwards at 27 m/s at vrs4 r3v6n v:oone invo6 4r: v3vsnrstant. 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 r (.kdprca 6t1ykg- /rnest and 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 strih aq++he rbono,6xen rn72b;8kes the ground with a speed of 30 m/s. Assume air resistance can7h,2xrb +qr n e;e6no8bnah+o be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4mf 2nqrg kc- 8m*+dl0n.w0jj(l6j:ikhuce8 v.0 m/s in the upward direction. W0rji -njldjvk 2chk 8m:gue .fl*8wm+nq0c (6hat is the approximate velocity of the object one second later?

  98.14: How long must a q)3sak ry2c/4t1)jspbmvva8t 1jd(o $2.5\;m/s^2$ 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 18 m/s. esf31 c t8d2tsIf it continues to fall, two seconds later the object w2sdc1test3 f8ould be moving with a speed of

  17.02: A small object is released from rd7jz c-za0o ,g4bm 2drest and falls freely for 4.00 s until reaching the ground. What was the height above the ground from whichgordd-j bcz24 07z,ma the object was released?

  11.06: A ball of mass =0.100 kg is launched straighsy0bmtz0b:/nli: kdtz j2tpf0-+r)d t upward so that it rises to a maximum height of 12.0 m above the launch poifb lst0) -y2pm td/ n0br+k ijdt0:z:znt. 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 lzlqfisczqe02f 8l(o3i8/3 ca aunched straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much time does it take the bis cze 3qco2 l8izf3q 80fa/(lall to reach the maximum height from its launch?

  98.31: An object sliding down an inclix.g 6 ,e8ebhwened plane has speed 0.40 m/s two seconds after it beginsh w6. egbe,xe8 to slide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-crfj 6u j0z1x yl(srh5:q,hi8m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s ljhqfrurs (6 jcyxi108z, 5l:h ater. 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 bf3 bceqt;8lr1z.m 3q 2*8jgym )ld fothrown directly upwards with twice the initial speed of another, how much higher will it byff.mrm3 *lzc)ql ;b8dqgb 81jot 2 3ee at its apex?

  02.30: A box falls to the ground from a deliv8kup1)u hbmm,r:tc :j ery truck traveling at 30 m/s. After hitting the :8,jtu:kbu r p1)hmcm 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 3rg( -gf-i3zze0 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, velocity and accelerationgi-z gr3ef( -z?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& r,cc4jdgjc, -ch1. nl 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of ecj4 dhnc, g -.l,c1rcjach stone. Rank from high to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight upward with identi+ p6awgfo-rpvz ioo 4g565e; s3kg5opcal linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If objectks4 ip o5-p wo3e6f rgp6g5oz;5gvao+ 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 groun1yv3ihgo7 ; kjq1 jnz7d 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 j1gj1;hiv3 7nykqo7 zbounce was 1 second, what would be the time between the second and third bounce?

  16.21: At 1.94 s after launch, a projep sn iurj n9dg70f;i92ctile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s97 rs pnjg0 f29;udnii, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical x+6 ,g3v rgwlbcliff. The collision 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 re6g,3rw gvl +xbsistance.

  06.03: Three students were arguing about th, aph (v 2thd09wh;r 29mivckn (+klufe 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 tennihkh(u 09; 2f mrvdlw+2, va(cpk9tih ns 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. 0 r1aclut66s fIts initial position is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system, the signs of the initial position, initial velocity and acceleration, respectively6c sl0t fura61, are

  04.38: A small point-like object is pulled downwards by gravity (down the planz 9eu;d-qq li7e 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 t ;eu-q7di9qz lhe 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 tojhlyp, 6hs fm1lgd7fqf+: 1-wp of a tall tower. Half a second later another rock, twice as massive as the fir-jl1pfq lh7:6 +hmg 1dffs y,wst, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s alongk* h:g03( mt*jjfo ga 6ozpo b*wj34fh a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the carfoh*j3pj3*fj :6tggwao *40( mbokzht 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 tracr-yh3: kbng 1rk. 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 thrrgyb3k :hn -1e cart travel before coming to rest?

  08.03: A dog starts from rest and runs in a straight line with a constant acce-y52/b ajmlxy lerationbma-j5x/ lyy 2 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 without air re9 n*1bubhp .thsistance from a height h above the ground. If the ball falls the first distance 0.5h in a time t, ho1* b.bnhth pu9w much time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerate to the lc5 c.ky:4nkw e.mu 645rsn/zwc+kzg 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, t5s w:n l.k+5zwczc /u.kc y e4nmg6k4rhe 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 hucnscm; ,3tv5 il4)vzorizontally 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 flight to the ground? l)s453,;i tcnuzvvm cIgnore air resistance.

  13.10: An object is thrown straight upw;bb as9,7jxu4hhj i7 kard. 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 objeb497b;, xh ujis7a jkhct as a function of time during its flight?

  14.03: An object is dropped into ;t 4nmk(uwr kexp4/g)free fall. Through how many meters does the object fallm;ng)kwk 4pe(/4 tx ur during the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7a qe) +kxrs0 jaad2v86.50 m to rest across a flat surface in a time of 12.0 s. What was the initial speed of the box when it started ies 6dj ax)+8vaqr2a k0ts slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 7.60 m/6lciw cjblnko d6 z a0g0(2-+ns in a time of 3.00 s. Through wnc o60 (z-al620bnwlgc+j dki hat distance does the cart move in this time?

  14.16: A toy car initially mo5l8-fqjexp5u.,ghmeh - tv2 ives 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 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 of5-t8gihj vq,5hx 2mpfle .- eu the average velocity of the car during the five second motion?

  14.17: A toy car initially,ev)roqm+ldj- umm( 3 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 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 o-m (l+3 mum),rjqe vdmotion?

  14.33: An object moves with constant ae((jq,p8 texq lh q0bhq3:6(losih2rcceleration 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 free fa x.4)6: p/cpjgqlyzwk ll. Which one of the following choices best represents the direction of the object’s acceleration 4p. g lqjy/pc6:)wz xkduring its flight?

  13.26: An object moving only to the right completes a 20.0 second trip izj j/ femzd)20/ohl h1n 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.1)/eh0/jmfozh 2d jlz 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 second trip with an pw4py quya7 29 aac//kaverage 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 directe ywa92 a/pyp c7a4ku/qd 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 dzcbd:2n4e ggi7z8x(bm .;raqropped 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, what is the speed of t8 4 c x.znzgr27q: bbige(d;mahe ball relative to the rock?

  16.36: On a straight road, a self-driving car races with a robot. Thyy/p5fe di/6n7erfyzu(b( 9 ue robot accelerates yd( 6u u7r fen9y/5bf(iepy/z 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 ver 6p rksr5j4g*jr wl:bir fc*1+tical 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 maximum height it obtains during its rc:s4jwi glj +kb5*rf6* 1rrp flight?