94.01: Starting from rest, object 1 falls freely for 4.0 seconds, and object 2-e0yx .sd jdd ,ui+t)g falls freely for 8.0 seconds. Compared to obj.yidtsdg,d0 x+ -)u eject 1, object 2 falls:

  94.02: A car starts from rest and uniformly5 k4bz tp.o0ba.k toy/ accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travel during this tiyzbk.bp/ .0oot 4ka 5tme?

  94.03: A ball is thrown off a high cliff with no hor6s-zhv:9cv5tv cn 3ml:4k+ckjcx k,hizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial velocity of the :vkc49k,lcm5ccznt 3vkh-x: vhs+ j6ball?

  95.27: A rocket near the surface fz8b6c0on 0 nn,yjtf ;of the earth is accelerating vertically upward attnz fnb0f6 ,co;y8nj 0 $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely fallingm+q.ltn a9x6)* gj )0 ehrdvaf body is found to be moving downwards at 27 m/s at one instant. If it continues to fallf0g) n*r+ d9ajm l.vha )xqt6e, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest andz,9k*hyj rfa etig//. 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 strikasu8i )yp0 g*o0vdfgfm pe 18-es the ground with a speed of 30 m/s. Assume air resistance sfo88a p)m-d vug gpfiy100*ecan be ignored. The height of the building is approximately:

  97.09: At a certain time, an obje bi i-kn1w37d-g ez -tusordox7t3*7xct in free fall has velocity 4.0 m/s in the upward direction. What is the approximate velocity o3d 7w nktriu1b sxo-dt-e-7*7 3ogixzf the object one second later?

  98.14: How long must y ywkns/ .u(.7ozx5hd cd90ii. j oo*ra $2.5\;m/s^2$ 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. If it goa5df*drq aj4d3n:+4yqn 0i continues to fall, two seconds later the object would be moving *ogn3andiq4y0 qf+j 5 ra:dd4with a speed of

  17.02: A small object is released from rest and falls freely for 4.00 6bif;d9.r e6tpoi .dns until reaching the ground. What was the height above the d dbo. e6p6ri9 ntif;.ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straigh b gc.f 5i)obygo+3 eg;bar/l,t 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 of the following choices best represents the magnitude of the nee/ obb,cgla yg;oib)3 .+rf g5t 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 i*9f)-pbruka2xi / n xat rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much time does it take the ball to reachkr)*2i- a uxpnx/f9ab the maximum height from its launch?

  98.31: An object slidin 4 q:z+2thhgfng down an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately h+q2h:g hfzn 4tow far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower with(q*c2k5qg . t9k4hu0,r xkrdt mdb r+h a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s later. . d t,*+qg 4rxu9rkmkhdt0bck5r2(hq 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 direzdlr-2udj x h9,9fpqp4q0:z jctly upwards with twice the initial speed of another, how much higher will it be at its a-xz40:q9ddj qp9z2l uphj,rf pex?

  02.30: A box falls to the ground from wg7 2fymoa m3j.g*f-vy4n4ava delivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long doj4yf fnov .3aygaw mmv7 g-2*4es it take the box to come to rest?

  03.29: An object is thrown ul kf(v4syd7h7 pwards with a velocity of 30 m/s near the surface of the earth. After two seconds what wou s 7kh(f4d7ylvld be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass z:v8 71ajg*cqqa + sblp4a;qe (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 high to low the maximum height of each stone. Assume air resistaq+*qjec1s 7v agz ala ;:bq8p4nce is negligible.

  10.25: Two point objects are lauezqsx:gg do* qts.0z8. f- 74hp f;desnched straight upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H abofhspeozefg; stqd -:8dg .0 sxq74*z .ve 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 shown. ahf0a5ezy 4l iwae45w21r c;sAfter 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 seconaerh5452i1 yaaslf4 0cwwe z;d, what would be the time between the second and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fall ac 2lq5jbngy/h z1t, 5kmhieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the pr j l2tyz g5nhk1q,mb/5ojectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The collision gzr+9+j 7l z3gi4hqk)fb 0ohw 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 gir7 owhlqfg0g9zjb+)4 +khz 3round? Ignore air resistance.

  06.03: Three students were arguing abo*(nach yd72y put 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 hd y7c pn*2ya(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 s;ye eh+ f33howesz(c8 ju rm:4traight line. Its initial position is x0 = -5 mete8s 4f3h3o+ mec:e zw;(hyurjers 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, respectively, are

  04.38: A small point-like object is pulled downwards by gravity (down t(a o)avehyv 6/he plane of the page) but is constrained to exactly follow each of the f)(o veavah/6y rictionless 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 changing direction that there is no loss of energy and that it takes negligible time.

  06.13: A rock is dropped from the i3r; + m7x7u3ht7wb w6voiempyg .x u4top of a tall tower. Half a second later another rock, twice .xum7ubwiv+w3p gotri e6xm73y7h4 ;as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving yetg*+), o3kp 6ookusxs* /rn 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 before coming to resteysg,/oxspnk6ortu o+ *)k*3?

  07.11: A cart is initially moving at 0.5 m/s along a track. The cart comes to9btwx2rydll/s u )5 3yptl7o* rest after traveling 1 m. The experiment is repeated on the same track, but now the cr2db* 9 yl5pw/73totu ly)xs lart is initially moving at 1 m/s. How far does the cart travel before coming to rest?

  08.03: A dog starts from rest an1i.d;hgvxlsrf 5ag 1/)4o /if *ydzyod runs in a straight line with a constant accelerationoihff. 45xg a1rydzlyod*si1)/g ;v / 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 resistance from :/bm,8 kv/hpn:chirm o6k 6si a height h above the ground. If the ball falls the first distance 0.5h in a time t, how much time is rirpsn6/h 8 /:km6:b,ivhkomc equired to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelaued.j,0 arbq1b8// 4nab7*req jfe derate 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 acceler 1uba/b j47a0,r.*r jeqb8 fnee qdd/aation 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 1 bt(9/bkbu hz(0.0 m/s from a height H above the ground. The object reaches the ground with a speekbbhu9/bt( ( zd 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 straight upward. The object remains indcvyr(1djmp 86-e/ce e:i :q c+bdly9 free fall until it returns to its initial launch point. Which one of the following graede+1v dly:p c-r(:cdyjiq96bc/ m e8phs could represent the velocity of the object as a function of time during its flight?

  14.03: An object is dropped into free fall. Through how many meters doe ciw7 3lzef.tn -u(kyvw308zo s the object fall during the first 3.00 seconds of f e 7ilw.vw 3c-(yztz8nfoku0 3light?

  15.02: A box uniformlyflji-crnd:8:u0b,r r8q x: rh slides 7.50 m to rest across a flat surface in a time of 12.0 s. What was the:rr- r:d lr8 b:qchu08fj,xni initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart ux:q (fdx24g+g;w dtmddd+v d .niformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance dv(td mqdd d dd2+xw;+ggf. x4:oes the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Fhwwls gnz :o*1 q-,bs,ive seconds later, the car is moving at 40.0 cm/s to the left-qs,z *wbw,s:lo1 gnh. 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 motion?

  14.17: A toy car initially moves to the right at 60.0 cm/s. Five seconds lk t/by:7; 9lb chdti;fater, 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 repdtb: k /b;hf7cly9i;t resents the magnitude of the average acceleration of the car during the five second motion?

  14.33: An object moves with constant acceleration starting 3vbp+i/azf7 x 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 whi wbw)usv(vb .7jk y(.jiap7 g)le in free fall. Which one of the following choices best represents the directioni u 7 j.7wwvsabkb ()jg)vyp.( of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 second trip iz*gypa)2ea3f n two stages, I and II. The average speed oa2 ezfp )3g*ayf 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 seconds of stage II?

  15.32: An object moving along a li.9xu3rjs a;ix sgnx*+a5l 0 vlne completes a 20.0 second trip with an average speed of 10.0 m/s in two stages. During stage 1, the object moves wita+i rll5g0s*nxu 9.a 3x;xvsjh 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 small rock is dropi fg -oh5uq4,sibos 0ggx/a*+ped 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 ii5bg +oqsa ogsx*4 -/uh,f0gi s the speed of the ball relative to the rock?

  16.36: On a straight road, a self-driving car r .13pxi t 7nxyt/y)lohcx(2yxaces with a robot. The robot acceley cix3n1px(7)o/y t .ytl xx2hrates 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 verticnhm 1 jt**gw9qally upward. The vertical 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 objn**1gj t9qmwh ect first at a vertical position that is one-half of the maximum height it obtains during its flight?