94.01: Starting from rest, object 1 falls freely for 4v4s)c ghz.p yb /f;eu/.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, object 2 fazvgub; yesp/ 4f. c)/hlls:

  94.02: A car starts from rest and uniformly accelekcwwr oz (6k, (ggq k;8ka25szrates to a final speed of 20.0 (, k rwa;kko(2sqwg8kczgz 56m/s in a 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 no horizontal velocity. It/dtlx dd x(9o e5cxm2s /nqi6oex2(o1 lands 6.0 s later with a velocity of 40 m/s. What was to/6n2qs (cdx/x ixlodmt9 e1o( 2x5dehe initial velocity of the ball?

  95.27: A rocket near the surface iwko+ 4)o h0c:tydrb9of the earth is accelerating vertically upward ak)w+yb:r0ichod 9 ot4t $10\;m/s^2$. 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 0zo2lyf+ , tglbe moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be moving with a downward velocity closozgl yl20+t ,fest to:

  95.39: A car starts from rest andrm7c.,,7mvnw l key5ax.pp uq h(;oz8 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 wi9khxp 5g m8xcvc+7 vs9ui.sr;*xqt* uth a speed of 30 m/s. Assuvscc9.;x gpqkh**8t5rs x+ mxui7 9uvme 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 gx) ek4du9eye yco5sco8 y )79in the upward direction. What is the approxi5 9ye9e g7uxc) skyeyod8 4)comate velocity of the object one second later?

  98.14: How long must a0d 9mos4*y9st8ut yok-p5xtb $2.5\;m/s^2$ 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 ubj+ta 7jh f /6l/r;ymto be moving downward at 18 m/s. If it continues to fa/hb 6+ry fa/j;jutml 7ll, two seconds later the object would be moving with a speed of

  17.02: A small objec z;g m+.v )5xkxqczkd2t is released from rest and falls freely for 4.00 s until reachi)gkd . mx5cqzkxv;z2+ ng the ground. What was the height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so that i-r 4 kmkov0e s,4rfl2h)ab z.tt 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 net force acting on the ballb so 0)v tfrm 4elkkha4,-rz2.?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 kg is launched strao4/you vvi5i:ok8 e)o ight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much time doeeuo)y v8 :4oi/o i5kovs it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclck4r8+k er3o9 hkbua:ined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does it travel in the4u8:9hakr +3c kkb roree seconds?

  98.40: Coin I is throw) r.z:i vzrqe 02l-mvwm39gib n upward from the top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed)i3i q09 2w:rvm. zvrbg-e l)mz 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 upwards with twice the initial spea 8v)ukfa6y.i ed of another, how much higher will it be at vyf8.k )6ia uaits apex?

  02.30: A box falls to the ground from a delivery truck traveling at olarl,w p8sln(am:1 0 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the bn( 80:m aoalprlsl 1w,ox to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/s (-z8x hn2psxknear the surface of the e- xn82kx shz(parth. After two seconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of diffe:k)feg12kh8ajuuls8 rent mass (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 resistance is negl : kkhf2g)au8ej1su8l igible.

  10.25: Two point objects are launched straight upward with identical linear hh/-w 3 p0cxt -38 oiwhpkyb3pmomentum. 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 in t8hp/3chhwk-ix ppy33bo t0w -erms of H ?

  04.28: A rubber ball bounces on the e0zhs2 6 d9my-ykjsf/ 9g4.d4d q opuxground as shown. After each bounce, the ball reaches one-half the hq46 4dsuj f09p2ke-zh 9sydd.gmo /xyeight 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 free4k z;omb5/qkt fall achieved 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 horizontal?m/q45 kz;kb ot

  05.02: A pebble is dropped from a hi5 vr60vcp xfmmac82*,c yzo:c gh vertical 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 mo c:c 6rm x205vycfcpvza,8*the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking garage. 9 .*wy7hhbc wc) cipe1One 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 i hpcbe1cw. 7*c)yw9hparking garage?

  05.07: A snail is moving along a straight line.7 5+t3wjh ozh mqixb1)rl,i8 v Its initial position is x0 = -5 meters and it is moving away from the orjwvqimx,+zt)i 8o5 l r7 bh1h3igin 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 ther k6:-yw7mp cq 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 tm6qp 7y-k c:rwhe 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 tou8+qpp z sv .rs l,ov;g09cy:wp of a tall tower. Half a second later another rock, twice as massive as the first, is dropped. I.8:urv sz0 cy ,s 9lg;pwq+vpognoring air resistance,

  06.18: A cart is initially moving at 0.2n g0tcct 7 f.v:/c8tjhuq 6q6 acc5nf5 m/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the hac2nqj6cccttc0t 5.g8:fv q67un/ f 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 p7rb uwwg-g*f * qma1+track. The cart comes to rest after traveling 1wg-fbqua*r7gpw 1+* m 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 rest?

  08.03: A dog starts from rest and runs in a straight line with a constant q 2.j)uoelgg;fm hqlb y58es-k1. uo3accelerau1j 3l-e ..qo hfl;u ek8ymsog)g5qb2 tion 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 j/-g8jt9 r z ,dxs-h,nah0nz urest falls without air resistance from a height h above the ground. If the ball falls the first distance 0. zx /nshg,8,-j90hnta jd-uz r5h 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 accelerate to the right. At time t=/fmqsa6fg1gw 2 f4oy+ 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 di1os2+a4g f /gm6 wfyfqstance traveled in this time T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizontally with speed 10.0 m/s from a heightxk/uhlhg2c90 al)6 ezud6qq/p*c 2aj H above the ground. The object reaches the ground with a speed of 20.0 m/s. Which one of the following6c0*u)kze jhxcghlpd9/q6 a2/a qu l2 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 in free fall:va9 e.r/,cm5k cazti until it returns to its initial launch point. Which one of the following graphs c/,zt r .ac:9i5kmevcaould represent the velocity of the object as a function of time during its flight?

  14.03: An object is dropped into free fn5qb ,va wp.g9 vqk6edif3 34m g8e-owall. Through how many meters does the object fall dwe5mwn9 aqdv q8ki,f b-ov.gp3e4g36uring the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat sur;h g24*de hv;;rnt o6iqap;lyface in a time of 12.0 s. Wha4t da;2o;gle;v;h6y pqrhin * t was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart un:r,vq; y( np5s n w)+wqhciig9r k(jr5iformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does the cart mo9qrns ,y5p +:kcngr (;w(hr v5iw )qjive in this time?

  14.16: A toy car init f:*iuyar tc22ially 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 velocity of the car during the five second mo r2tafy2* uic:tion?

  14.17: A toy car initially mov*n.fqblxfx2 ku ;qj798cc8e b es 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 t c xnbf;fub7e.8q9lc8x2kqj* he 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 motion?

  14.33: An object moves with constant acceleration starting wit,t:-/4o fxm 4g vsqhmih 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 freasck)epry;2v* 11afhjh d/6u e fall. Which one of the following choicesdjk61/a2ha;chsy)v ep f1ur * best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right complbtlo *tqk*;7xj 7s 02y)pkl dhetes 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 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 o;2tho 0 xp7)bkdqy tsj*7*llk f stage II?

  15.32: An object moving along a line comple(aa8qtq o );:ii .8grc. m c;gaosgdi3tes 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 right for 12.0 seconds. Whgm.q(o8 as;rq;ac i):igd g3.ai cot8 at 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 dropped from rest. A bad*f 7d v23g83xrz7fx.tm chasll is launched straight downwaxf.z 3c drxsm 3t* h82g7davf7rd 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 q 581vb/ ksgqyrobot. The robot accelerat/yqg q5sb8k1 ves 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 vertb+w-t(2jp00*tuh tp9c1yf(h iqxe g gically upward. The vertical position of the ball 0.70 s after release is the same as its vertical position 4.10 s aeg0ut cfx qpp 9th+ gbih1w*0(-y2(jt fter 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?