94.01: Starting from rest, object 1 fa q8wwvpn49 r(jlls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Comvr(pj n9w8w4 qpared to object 1, object 2 falls:

  94.02: A car starts from rk: n+pgc6cs3 nest and uniformly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How f: ps3 6kcgn+ncar does the car travel during this time?

  94.03: A ball is thro6 p196ysu wb3 unv:cojwn off a high cliff with no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial velc3pvnwo9u :y16s6ub jocity of the ball?

  95.27: A rocket near the -o vcu.ye2h4fz3 6bl.. asfnq surface of the earth is accelerating vertically upward bf3qu zy-c.an oe2v.s4f h. 6lat $10\;m/s^2$. 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 ayr6nhakdwa- e6 s-aue0iu21e/eg ;z(t 27 m/s at one instant. If it continues to fall, one second later the object would be m -2i16ke; zg0uae dnwsue hye(6-aa/roving with a downward velocity closest to:

  95.39: A car starts from rest ah p*td250m;x, qurbq 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 strikes the ground w4 ;dxznshosy-70/3fmq wa,jo 0(mjpz ith a speed of 30 m/s. Assume air resistance can be ignored. The height ohsdm3 40zf yj owq- ,n;0(jp/azsx7 omf the building is approximately:

  97.09: At a certain time, an object in fr3olnr .w3dd;o xy93 voee fall has velocity 4.0 m/s in the upward direction. What is the approximate velocity of the obje l33rdon3vx9dw y.oo ;ct one second later?

  98.14: How long must a owzq4,g1n 7d8 4qxtsb$2.5\;m/s^2$ 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)xj8 fhu7s/phpdaw;. be moving downward at 18 m/s. If it continues to fall, two seconds later the object would be moving with a speed ofsjh7)8hfd. x ;/ap wpu

  17.02: A small object is released from rest and fall m))ztq;y :prds freely for 4.00 s until reaching the ground. What was the height above the ground from whrd;p )yqm)tz:ich the object was released?

  11.06: A ball of mass =0.100 kg is launched straight (d82d6 t c vumvx5b,ww.cm7wc 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 uc7wxdvvm26bt, 5 .(wcm d8wcrepresents 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 stra7/m eac gs4zil;jcl o 9v5x*5xight upward so that it rises to a maximum height of 12.0 m above the launch point.4c 7/vxla 5c9*m josz ;x5ileg 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 r. wq-i)/tu4d4s gxxxdown an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approq g).t4wsxxird- /4ux ximately how far does it travel in three seconds?

  98.40: Coin I is throw3c-)p3vn:gj)br eyfp n upward from the top of 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. Arceg3:f-bvn y)j3 )ppssume 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 upwarda mm*,ehly)b )n qf,t7cokd/+s with twice the initial speed of another, how much higher wi /,,qy+afod)hc ktebm7 ml)n *ll it be at its apex?

  02.30: A box falls to the grounr vj/)e,p +l kmw(v0bxd from a delivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box to come to rev(kv0erjl/m wpx b+,) st?

  03.29: An object is thrown ux3ok pznqm1 (;pwards with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, velocity and accelmnx(k 1qo; zp3eration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vertically upwarjojll*-d::smcto (oo,u ak: 4d with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and veloci:k: lu(tso,d:ao-4ljjmo c*o ty 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 launched straight upward with identical linear mome043vcaq l, sx6j7cu rx2y+pdqntum. Object 1 has mass M and reaches a maximum height H above the launch point. If object 2v2 a 4 7qyr,ju+c6pl3xxqs dc0 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 shownz+ jqwviusluuxw sm0.5y3 3ct03 9lm.. 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 bounce was 1 secos 3 ixl0s t3lcq9 3+wum.uym w5z.vuj0nd, what would be the time between the second and third bounce?

  16.21: At 1.94 s after l f:ff. -t0 nve(5txe/8zmfy oaaunch, a projectile in free fall achieved its minimum speed during flight. If that minimum speed wafof xte:e0(m y/v 5t f8za-f.ns 15.0 m/s, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high verti9 e0kb sov366e5kqpov5t3 y uvf6u;gwcal cliff. 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 thv5s3u9b3go6; eet5pu f6vkwovk y06 qe ground? Ignore air resistance.

  06.03: Three students were arguingya6l kfo ;yz5.v*e1*qcbjb, vq .wu )g 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 o. c;z a5f*vqyy, vgb.w)*uq6kobjl 1ef 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 alon)qn 2nhlk + 1qdxc3j bfgwk..,g a straight line. Its initial position is x0 = -5 meters and it is moving away from the origin and slowing down. In t)x.n,kqg 1jw+nbf h l3k d.c2qhis coordinate system, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object 0ai m,foqjp9h 0x zo4-is pulled downwards by gravity (down the plane of the page) but is constrained to -4m ixha0p0o qzjo9,f 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 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 t.tye5 rjwm0k(vv* -4a 4ex recower. Half a second later another rock, twice as massive as the first, is dropped. Ignoring air 4vacvr.trjwy(-* ex0ee 45 kmresistance,

  06.18: A cart is initially moving at 0.5 m/s atgqtw--1o qk00 h 2hfbsw rj0:long a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the saks 0:0 bhwt-ft j2wg-qrq0o1hme 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 track. The cart comes (*7 7cdnvgg s wqt 8.xm/tuxs9uymrdr1, l.d.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 cartmtd1/uyggd x, x.8sn d.vusm wc97lr7q.(rt * travel before coming to rest?

  08.03: A dog starts from rest and runs in a straight line wi 5x fifl99x+ybth a constant acceleration of 2 9bfyx+x5li9f $.5\;m/s^2$. 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 resisg:f(ly*(fnanp,b1 yc tance 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 0 1ngfyca:(yl pb*f(, n.5h?

  10.38: Two objects both movx93nc cazi7az ,qgng r642fw7e 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 travele34 w,nfx7c96gqgarza izc72 n d by Object 1?

  12.26: An object is thrown horizontally with speed 10.085ai1 .h:yxad w7b 6z-ekvfkj 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 tojfd5yxzi w .1v6a-h :kkba7e8 the ground? Ignore air resistance.

  13.10: An object is thrown straig;yt m5tufmnzr 3k8:p4y 7c8*ef0mxwxht upward. The object remains in free fall until it returns to its initial launch point. Which one of the following graphs coul;4y5 xx mez0u:tm *cnywfmtfk 8 rp783d 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 does theugn0 zut9 tb zu ( pxyna0h)2t)0+p4yy object fall during the first 3.000uyb)xyt zuu4yhn +zpa9 g2p t)n00(t seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat sujo)oh ,r :nev+o7a 5tkrface in a time of 12.0 s. What was the initial speed of the b 5+rv:,)ejt onhkooa 7ox when it started its slide?

  14.07: Starting from rest, a cart awdvn5r l;h7 4uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance dov4 ;hr 5ldaw7nes the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five sp/e8h3xbsrt t , h+6bveconds 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 e/bsb 8t3 p,6hrthxv +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 later, pr6qc+pyf16 iryz w .-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 wherefyqr6+6cz i.-pw y1pr 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 constant acceleration starting with velocitpv-doht nhv8 j / c+bqm8h2/1ay $v_0 = 5.00\;m/s$ 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 fall. Which one of th v exa*onh;r ;o,/ez9fe following choices best represents the direction o *az ;hnfv9x/ oroe;,ef the object’s acceleration during its flight?

  13.26: An object movinba3;bn 6(9m9+j2 rdrn 5b i;vrylzku mg only to the right completes a 20.0 second trip in two stages, I and II. The average speed of the entire trip is 10.0 m/s. For stage I, the object moj d a;u9z(;b bnmm 65r32i+rbnlvr ky9ves 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 z6m/litdt6 d/s f:t7wline completes a 20.0 second trip with an average speed of 10.0 m/s in two stages. During stage 1, the object moves with a constant velocity of 6.0 m/s to the ltt:wsdi6 t/mf 76/dzright 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 hig58 aezy)defricku1) + h cliff, a small rock is dropped 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 theezi e 58kar uy+))cf1d speed of the ball relative to the rock?

  16.36: On a straight road,nb p p*-dx z(top()ky2 a self-driving car races with a robot. The robot acceleratky-*zobt ((pxpd np)2 es 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 v2bhon5r; avgzyi p.)ui4;t k*ertically upward. The vertical position of the ball 0.70 4 )ugya;;vriz 2ni5.t* pbokh 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 flight?