94.01: Starting from rest, object 1 falls freely for 4.0 seconds, ap4yh:5m pge +end object 2 falls freely for 8.0 seconds. Compared to object 1, object 2 fap +peeygh:54 mlls:

  94.02: A car starts from rest and uniformly accelerates to a final speed nqb 8wriy0p5)of 20.0 m/s in a time of 15.0 s. How y5wrb0i8 )npq far does the car travel during this time?

  94.03: A ball is thrown off a high cliff with no hoxxch .8oxd54cw9 6 i- czx*hfarizontal velocity. It lands 6.0 s lat4c fx9 5cid 6co-x*.8hxhxw zaer with a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surfacesoxyey-0b 7jaw )hj5. of the earth is accelerating vertically upward wb5)7.s ejh yaj-oy0xat $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling boqwx e7- 4vjuhr.iv41z dy is found to be moving downwards at 27 m/s at one instant. If q.- jzxh74urw4 v vi1eit continues to fall, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest 2j6t f-ighx;jhql v/u-*1kq t 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 grou2zi . afa,qb0q6w .hh/sl.epdnd with a speed lsfa., pbqhi..wqhedz0a 6 2/of 30 m/s. Assume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/s in the upwcwgn39pd c7 -xte-z ukg(c3v1ard wxc-e3tcg u7 zvk-1dpnc(g9 3direction. What is the approximate velocity of the object one second later?

  98.14: How long must a +l 5((l 6zqtdpg-1stv/znwh n$2.5\;m/s^2$ 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 downwarb+c;e)y tnd /zd at 18 m/s. If it continues to fall, two seconds later the object would be moving witb;z yn+dc/et )h a speed of

  17.02: A small object is released from rest and 5 b0iexh f(htt ; gm.0+gg+fxgfalls freely for 4.00 s until reaching the ground. What was the heigh mgh+x 5h;ibet.tfg0g(x+g0f t above the ground from which the object was released?

  11.06: A ball of mass =0.1001z.fyyu 7ekk8 kg is launched straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignze.7k k yy1f8uore 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 upwardiuqxeqc-06)xklmb 6jl(1po* 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 ball q-x eo*xl )ml66p1i k(0bqujcto reach the maximum height from its launch?

  98.31: An object sliding down an inclined plane has speed 0.r+scl8f;.acf 4r9 dxi40 m/s two seconds after it begins to slide. Approximately how far does it travel in three seconds 8cff;s+lrc dr. ax4i9?

  98.40: Coin I is thrown upward from the top of2cqaw .4 a3y3vz(us if+w2epu 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. Assume g ic2ia wvu.p2qf 43z a(3suwey+s $10 \; m/s^2$. How far below the top of the tower does coin I pass coin II?

  02.04: If a ball is thrown directly upwards with twice the inn; *+qli(60bn cxkdh b6y5gv ritial speed of another, how much high5h bkg dyv6nrqc(;+*0lbn6 xier will it be at its apex?

  02.30: A box falls to the g va(mxsba 3- ef w+w/t2uyp:z.round from a delivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How uz .(2mb xy f3:eswt- pwaa/v+long does it take the box to come to rest?

  03.29: An object is thrown upwards with a velocc +w41x*z.y;jbmgn84dczv j rity of 30 m/s near the surface of the ;4wjycc rz jx vn8*.g +4zb1mdearth. After two seconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3my;2mpn o16gte 2p e,8xeg iruo;(oi) c 3ifo-w) are thrown vertically upward with different velocities (1v, 2v& 3v c63 wm e8 iopun;tre2(gie g1 p)oyoo,-2i;xfrespectively). 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 launched st + t*ckn)bxev-raight 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 atta+tkbcnev x-*)ined height above the launch point in terms of H ?

  04.28: A rubber ball bounc8ak2c m- juwineno 0v./(;vcges on the ground 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 bounce was 1 second, what would cn(jikmv a-o2 .0ve cwu;/8gn be the time between the second and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fall achievedjm-;dnxy2mo.;7v/ prr n w o(p its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launch from the horov;2. pw dy7 ;xnrr-jpm/m (onizontal?

  05.02: A pebble is dropped from a high vertical cliff. The collision of the pm/o4ar83*u49qpch 6 ovqqd zvebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit t4o 3hq d 6uvv4 qpcr/*zoqa98mhe ground? Ignore air resistance.

  06.03: Three students were arguing about th*xs4 xw jjb1stsqhi6+: z)zl .e height of a parking garage. One student suggested that to determine the height of the garage, they simply had to drop tennis ballszx twxsilz: 1 jjh+4qs6.)s* b 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 parking garage?

  05.07: A snail is moving along a straight line. Its initial posvj6lgi rd b,(.ition 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, respectibrd.i g( ,jvl6vely, are

  04.38: A small point-like object is pulled downwards by gravity (down the plane+ 7*neyith d6a: wkdv+ 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 d*vweh6ti kn +ayd:7+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 klyrc )b ckq5.d95fm;top of a tall tower. Half a second later another rock, twice as massive as the first, is dro5km c5fc.bk9); qrydlpped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The cart comes ; 5sbky q,o s azw7(td.8a6rtvto rest after traveling 1 m. The experiment is repd6z 7q,tsr8b5t s o.ay(;wavkeated 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?

  07.11: A cart is initially moving at 0.5 m/s along a track. The cart ce:4s7s d ei9seomes 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 travee d49esie7: ssl before coming to rest?

  08.03: A dog starts from rest and runs in a straight line with 7henbs5 di/d p0vr((ihqq b a;5pl,a 6a constant acceleri rb 5shbna( 657, qdi/q(phe;0 dvpalation 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 rea jgx8iaze(-s.92l 2zfgo b(dst falls without air resistance from a height h above the ground. If the ball falls the first distanb( .z9zil2g-8x g2 o d(jefasace 0.5h in a time t, how much time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly acceleraty z :nb9v a4ke 1-a-aelkg3hw*e 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 travele k-4 h kve9-1nw:ayzle*gaba 3d by Object 1?

  12.26: An object is thrown horizontally with speed 10.0 m/s from a height H abbh.1fyqght/-n k2i 6 rg- o*wjove the ground. The object reaches the ground with a speed of 20.0 m/s. Which one of the following choice /it6-gfn obkjr1w*gyh . hq-2s 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 in free fall 0sb2 qgi xlz7u7b +,ny;gbs 5nuntil it returns to its initial launch point. Which one of the following graphs could represent the veloy+5glnibb7z7snqx; 0s,bu2 gcity of the object as a function of time during its flight?

  14.03: An object is dropped into free fall. Thro dat751sr u oidb7c, 5ublo,0dugh how many meters does the object fall during dd sb d 17oau,uil75cr5t,o0b the first 3.00 seconds of flight?

  15.02: A box uniformybg77.;85trj:p qwbpfb vtd;g ;;c glly slides 7.50 m to rest across a flat surface in a time of 12.0 s. What;prp .vgyqgbgb ; 7dl:j w;7tbfc8 ;5t was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed *mj i 08irz3thof 7.60 m/s in a time of 3zii3 8 rhjt0*m.00 s. Through what distance does the cart move in this time?

  14.16: A toy car initially mof 00toa3ny)) gata1 eaves to the right at 60.0 cm/s. Five seconds later, the car is mo yaf)a0g1ate)o3 tan0ving 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 velocity of the car during the five second motion?

  14.17: A toy car initially moves to the right at 60.0 cm/sd* dk:ah9 y5s(awy ka/ju/s m(. 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 maga/(du:ky*awm(j s adh9/5yksnitude of the average acceleration of the car during the five second motion?

  14.33: An object moves with constant accelerat,uae9r5khria4)0f l6 nwh 7 gbion 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 whil: 6 ssakxrrotljf ;plv5zq1) a2e.:k-e in free fall. Which one of the following choices best represents the direj-;al rks: v.25 rpo6q )lfe1zt:k xsaction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 second trip in twon dq5. grj8i9d stages, I and II. The average speed of the entire trip is 10.09jq8ddgi.rn 5 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 completes0v+ xjo h6d;qm a 20.0 second trip with an average speed of 10.0 m/s in two stages. During stage 1, the object moves wi d6+0mqoxhj;vth 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 roctqs* m5/qhzj *k is dropped from rest. A ball is launched straigqh/ tq*mj*sz5ht 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 s63v9wpz fr5 wwelf-driving car races with a robot. The robot accelerate3vfw 5pz r96wws 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 po7xq qqxv )nbne9 rd6 315,nvirsition 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-halfnxv 5n,x7q 6i1v9eqdqbnr3 )r of the maximum height it obtains during its flight?