94.01: Starting from rest, object 1 falls freely for 4.0 seconds, and object 2t9o 2)c,zxqh c falls freely for 8.0 seconds. Cocx z 9qc,2h)otmpared to object 1, object 2 falls:

  94.02: A car starts from cosn)x5)xlu*e m/6 ssrest and uniformly accelerates to a final speed of 20.0 m/s in auo xl/*ss )x6en m5c)s 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 noviz( bdpv74 8,b8 sjnzb 8akz, horizontal velocity. It lands 6.0 s later with a velocitb(jpvz, 8 bzkn a,s8d74zb8v iy of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surd ly nt;ua)l/7u0k1i- v ad1yuface of the earth is accelerating vertically upward att luny11)dv7;y alu0/-k diau $10\;m/s^2$. 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 downwaru-g p: h16kn3zt cdt +yr-,evyds at 27 m/s at one instant. If it continues to fa-r1 ,n-zg+tkdyyt3: vcp6 euhll, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rev h46kz y;rw,pst 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 o8x- swg51 vd3p7aw c)/vpmndbf a building strikes the ground with a speed of 30 m/s. Assume air resistan/cm-78n1wxgw bdpa )3vsv5 dpce can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velo4r;ix rm+y2wncity 4.0 m/s in the upward direction. What ix nmr;+42wry is the approximate velocity of the object one second later?

  98.14: How long must ad2mtd(7g r w;r $2.5\;m/s^2$ 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 23ek/ ;gx3r1atkge tshe/:cg to be moving downward at 18 m/s. If it continues to fall, two seconds later the object would k e3g2 gxhs 3t:/etgr;eck/1abe moving with a speed of

  17.02: A small object is released4zddsyw*v(pnsh;b5 ke4,2ll ;o uwd( 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 relea 4;ew,yvl4 s dznhd;(pb52*uo s( wdlksed?

  11.06: A ball of mass =0.100 kg is launched straowshsk3vct5w,7 6:9ky,af ch ight 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 heiahc,h7fs9tk6 k svyw 5w3oc:,ght, 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 strai cpjghn4(s :g,ght upward so that it rises to a maximum height of 12.0 m above t(4sg nh j,:pcghe launch point. 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 plaq-ust/nb vzrk45wz0 p(7op g.ne has speed 0.40 m/s two seconds after it begins to slide. Approximately how far doebuqrnp0 (gpw/s.7z- v 4otkz5s it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower with a speed of 1 y87 vs:uoej0 e5w8v. vkyjxjp ;-ig9k5 m/s. Coin II is dropped (zero initial spe8kveg78: w0yyje59;uxpv v j-jio.sked) 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 oy t uiih5ecw5n 7b*-7upwards with twice the initial speed of another, how much highebtwhn*7o5uc e-iy7i 5 r will it be at its apex?

  02.30: A box falls to the ground from a delivery truck trave c2a/ys8jfr+b ling at 30 m/s. After hitting the road, it slides 45 meters to rest.s j2bra8yc+/f How long does it take the box to come to rest?

  03.29: An object is thrown upwards with a velocity ozlrzf uwdeh4(o6/, 4v f 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, velocity and accelerr6 4dfzeu wloz4v,(/hation?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown9k9.bdo (j te)ydi(rw sh/ k(a vertically upward with different velocities (1v, 2v& 3v respectively). tsk9jd9woik)r .(bh( yea d/(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 objects are 1 bn)7+cf gmqfuk9 uw: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 has mass 2M, what is its maximum attained height above the launch point in7)1:ufn+ k9gfu wbcmq terms of H ?

  04.28: A rubber ball bounces on the ground as shown. o .bgg:ncm q d)87 hw7f;ugajwon2y66After each bounce, the ball reaches hmf jw g)7 .6 a7qgogb8on2uwcynd6 :;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 between the second and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fall achieve9 t5wf eoqr-;zd its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle ofrqz;5o-te f9 w launch from the horizontal?

  05.02: A pebble is dropped from a high vertical chkmfe e1)gzqsk m679, liff. 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? I,m7fzsk1 6he e kq9)gmgnore air resistance.

  06.03: Three students wet,; v5ad*uwkjd dcm66 - jf9exre arguing about the 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 tennis balls. If the time for the ball to fall was 1.4 seconds, approximately how tall is the parkitdf dvd6c6 xj9,- ;em jkwa*u5ng garage?

  05.07: A snail is moving along a straigmf6w-vpp ()jv ht line. Its 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,j f( w)pp-mvv6 initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled .dh k9evy; 5l7fwlxi* d,1*tegkxx*zdownwards 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 am.x7d w* dlky kt1x vghe,9x**e;zli f5ount 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 zkcpeeas0 1 t-u6fc 74fmfp64rbsb/:the top of a tall tower. Half a second later another rock, twice as massive as the first, is drkpbfc/-u tfbsc1:me f7 zrs4 pa 6e640opped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 - 8yrxlla q sdk:+or/ -t1tlo+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 traxar1ot/dty +:+srl - q- okl8lvel before coming to rest?

  07.11: A cart is initially movinbo4*svsh )n7q g at 0.5 m/s along a track. The cart comes to rest after traveling 1 m. The expe7vn sqb4)*soh riment 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 fromah03*vddiq k v g1t.9e rest and runs in a straight line with a constant acceleration of 2*kvidv hqe 9gat.130d$.5\;m/s^2$. How much time does it take for the dog to run a distance of $10\;m$?

  10.29: A ball initial3vfkx.9bb w, pl+- uqxly at rest falls without air resistance from a height h above the ground. If the ball falls the first distance 0.5h in a time t, ho- buxq f+w. ,b9lpv3kxw much time is required to fall the remaining distance of 0.5h?

  10.38: Two objects boz9i() ,s5abg.iupg.m p,7ms hdqb :uoth 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 traveled in this time T by Object 2 to that traveled by 7aupssip,i(. oumb:hbg9g5. z),q dmObject 1?

  12.26: An object is thrown horizontally with speed 10ms5+vc;r3o v)gy( lub .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 flrmbo5(vs )3 u;cly+gv ight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The object remains in(m noo*48cbw6 utsq*l free fall until it returns to its initial launch point. Which one ofbc4(omt8 u6s **wq nol the following graphs could represent the velocity of the object as a function of time during its flight?

  14.03: An object is dropped into free fal*lswc4;r6/bt a o83f,tseqjfl. Through how many meters does the object fall during the fbfo/8lt j6c rs;tw 4 *3faseq,irst 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across adv;t8t; zqcc7 flat surface in a time of 12.0 s. What wasczvt; 7q8; tcd the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 7.60iuzn./9, q 1xvtu7yy u m/s in a time of 3.00 s. Through i.zt9v1 n yuu,qxuy7/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 latuwh2* ixxi66 -cui 2ki/ eda8her, 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 velh68wi6eud / xii-aix2 u*chk2ocity of the car during the five second motion?

  14.17: A toy car initially moves to qp;zjk7v98 fiukscb11t 4 qs)xz (lj *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 th9;k* qc is)(uzzjjx l7bqt11s pfk8v4e magnitude of the average acceleration of the car during the five second motion?

  14.33: An object moves with constant acceleration start 4mhj 6xnctbl8/pj4. ying 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 movtu,d 6mi x,+8np/w(kcl,ldw c ing upward while in free fall. Which one of the following choices best represents the direction of the object’s acceleration d8tlxumw d d(w n+cc,k ,/li,6puring its flight?

  13.26: An object moving only to the rig01c fcglfr9 b8h- q)meht completes a 20.0 second trip in two stages, I and II. The average speed of the entire tr lmq-rg9cf1)cf0b8 h eip 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 seconds of stage II?

  15.32: An object moving along a line completes58)l 3fepd,gmutd5 3l3le;) jx vkri b a 20.0 second trip with an average speeevd )ldlbg8 p,j33)r l55x3;tfeui k md 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 must the object have during the 8.0 seconds of stage 2?

  13.33: At the top of a high cliff, a snso/z ) 8 o15zqwy. gv20g 4evyfi:bltmall rock is dropped from rest. A ball is laun:vvgo5)tn0 zgyze 2lb fq4ysi o8w1/.ched 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 the rock?

  16.36: On a straight road, a self-driving car races with a robot. The f ys;l1mfro0 xd21yb -robot accelemy-112lsxob ;ry f0df rates 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 vertical pos0,1p8d*g( )kaaxf vcsofl +mfition 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 tha+ ax(m1g a0f8ocpl fkvf d*s,)t is one-half of the maximum height it obtains during its flight?