94.01: Starting from rest, object 1 falls freely for 4.0 second)cgl at:;nk 9ls, and object 2 fallsc:kn gtll9 );a freely for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates toamd2x/st;rjc0 v*c ;s a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travel during this ;/*scm a2jcr dxt0v;s time?

  94.03: A ball is thrown off a high cliff withny f5x k4(+8hghh mtx6 no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial velocity of the ball5h(+ mg xyknh6ft48xh?

  95.27: A rocket near the surface of the eartu( 6tcp35wsh4frvh, f h is accelerating vertically upward afp3u wt(h4fvc5s r,h6t $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is /cx9c)wyl,deucn4gk): x5 ccfound to be moving downwards at 27 m/s at one instant. If it continues to fall, one second 5xxg9 dycw u,cc:)cl)4ek c /nlater the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and acceleratesv )eaqkbw++e * 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 fro:cbqhy9 ;5uu8 aymbu*m the top of a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of the building is approximatelq8hub ;y cu :muy*a5b9y:

  97.09: At a certain time, an object in free fall has velocity z 0(-y*csr 8srn (safk4.0 m/s in the upward direction. What is the approximate velocis kszcy a((nr*f8 s-0rty of the object one second later?

  98.14: How long must-mz x9qc50v-cptt ho* a $2.5\;m/s^2$ 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 mo rongx 5,jv:icnz00t( ving downward at 18 m/s. If it continues to fall, two seconds later the object would be moving with a s(t i 0g5rcn0vjn:zo,xpeed of

  17.02: A small object is released from rest and falls freyn ouf,kv)j8 h4nt1f3 na s)c m98is;sely for 4.00 s until reaching the ground. What was the height above the gr8k1f4) ;8tv scsanhfnso)m u 9,iynj3ound from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so that ityqsiqeccyi: b838 9 j. rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. When the ball rbcce8qi3iy: .j 8yqs 9eaches 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 massejsn,-1widgfkz/+ 2v =0.100 kg is launched straight upward 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 to reach the2f,zwnj+ dsvi1 - g/ke maximum height from its launch?

  98.31: An object sliding down anreon(v, xni0n53z v:k inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does it travel in three seco(n xo v35viz, 0nek:rnnds?

  98.40: Coin I is thrown upward from the top of a 10 wz./wphy gvnvay6uzb13 r- 620-m tower with a speed of 15 m/s.pyw v/n6ary u2z3 w16zvgh- b. Coin II is dropped (zero initial speed) 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 c,+oz rg*49 rvrj/ddxwith twice the initial speed of another, how much higher will it be at its apez*vj/xc, rdgro4+ dr 9x?

  02.30: A box falls to the ground fromxm /yw-fcq c+. a delivery truck traveling at 30 m/s. After hitting the road, it slides 45 -my x/+ccf w.qmeters to rest. How long does it take the box to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/s neeys + (-fh4cy.pf)om c-xhn4b ar the surface of the earth. After two seconds what would be the direction of the displacement, velocity and acceleratio+ffxnh s e)o-(-c ycm.ph4 y4bn?
displacement velocity acceleration

  04.10: Three stones of different massm(:g93x ymbs k (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. Assg(3bms:y k9mx ume air resistance is negligible.

  10.25: Two point objects are launched straight8x,cz h*7 wb78ec 1ersc znmv: 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 thw,m ez chcnv:*r 1s878cezb x7e launch point in terms of H ?

  04.28: A rubber ball bounces on the ground as shown. After each bounce, the +1/gonfk i2ytball reaches one-half the height of the bounce before it. If 2k ntoi+ygf/1the 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 achieved itp hnk47yxo 4(bs minimum speed kh7 4bp n(4yxoduring flight. If that minimum speed was 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 vertical cliff. The cowd1brw-tl v :-;vnh* gllision 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? Ignore air resistancen-rdwh gvlb1v-;* t:w.

  06.03: Three students were arguing ifxmq(.+ ar:nabout 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 thn qx+ m:r(ifa.e 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 po avmpd6p7)on+ u npd9bz-z*0isition is x0 = -5 meters and it is moving away from the origin 9* po07bv zd+pd)6manzinp u -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 the plme3ol 7vepir:kbu+ 7rv : 6g* y4bw-maane of the page) but is constrained to exactly follow each of the frictionless pathw6wub7k7i:: rv4 gel *a3r ommevb-y p+ays 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 opvhfui8 a8n,fw d2hnm.48a l.f a tall tower. Half a second later another rock, twice as massive as the first, is droppednh28 nm h. 8aufp8fa4wd.,ivl. Ignoring air resistance,

  06.18: A cart is initially moving 99z:khdi s w*wat 0.5 m/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same trac*hwd9s9ki z:wk, 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 eh 2zo5*ucz*zgxhwo n29)v+ a7w :mhlm/s along a track. The cart comes to rest hzmv ah*z:+wo* 2 ex h)5cnzlu79 wgo2after 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 rest?

  08.03: A dog starts frorkda o)+2age8 m rest and runs in a straight line with a constant acceleration o2o reg)+8kdaa f 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 a height h akwbu q ot/z4oh -ik) 4qxx78+kbove the ground. If the ball falls the first distance 0.5h inx hi t ou+)8xk4 k-bqwz/koq47 a time t, how much time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both mov0)vks z1k/t)nq sz3 nie 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 ) ) z1v/ nkinsk0qtzs3the 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 Object 1?

  12.26: An object is thrown horizontally with speed 10.0 m+sd.et. mnhit 0 ub .gd0djjzs nsu6v)3r 5u5)/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 to the gr 5. zunvstds0jj0ubdh .3 +m6r)5disgn)eut .ound? Ignore air resistance.

  13.10: An object is thrown straight upward. The object remain+n*8 0se9 *lekeclas ls in free fall until it returns to its initial launch point. Which one of the focke*sl +0 eela9s*n l8llowing graphs could represent the velocity of the object as a function of time during its flight?

  14.03: An object is dro rxhq n (( hq8p7:jvbc6f-buy(pped into free fall. Through how many meters does the object fall during the first 3.00 seconds of fl(q7-(h( 6bx8:bh p qcjf unyrvight?

  15.02: A box uniformly slides 7.50 m to rk 3nyx rg-xpnsac 951/est across a flat surface in a time of 12.0 s. What was the initial speed of the box when it 1 n/xrks ay539c -xgnpstarted its slide?

  14.07: Starting from rest, a cart uniformly acceq)-i vzv/tbpc id;*.5 d q;keklerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does the cart move in this tidqtp v);zci e/;bidv q. *kk5-me?

  14.16: A toy car initially moves to the dmyb f8* 8x y79nfhnof(d0inq3l3,i h 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 r* fdlmnyy0 8(3 9ff7ohb8dq3n hx n,iiepresents 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.rqdul0ds5o o .)1b, pz 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 acldr0bz. so, ud) 1qop5celeration of the car during the five second motion?

  14.33: An object moves with conxcu0o1 z43zb nxng*1lstant acceleration 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 while in free fall. Which one of(;p2 k*g jxg5gcs 0ply the following choices best represents the direction of the object’s 0gpsxlkgyg(* ;j52cp acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0f:*4 ta aqa*ho6 zxe6b second trip in two stages, I and II. The avt**66zf aah :o4qexa berage 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 of stage II?

  15.32: An object moving along a line completes a 20.0 second trip wit1:ew kjksb(5m a3z4xn-m)hobh 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. What constant magnitude acceleration :(homzm-5seb4x3jkb) k a1 w ndirected 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 f i6mif7b 7x soin,a3rs.g+k of:. wn7from 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 the speed of the ball relative to the r:s.bf gffa6 n7 7nsri,xoiwimk o37+ .ock?

  16.36: On a straight road, a self-driving car races with a robot.qp/ywzfhrud0yljt9 )7 91 i/k The robot accelera lk/9y drw1quhz)fjip/ ty709tes 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 position of tg3y; a +t5 -mala5zr6cpme uo:he ball 0.70 s after release r:5a ym-taa +lc5;ugzo6m 3peis 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?