94.01: Starting from rest, object 1 falls f-gz u4wtkm n+0reely for 4.0 seconds, and object 2 falls freely for 8.0 secondsu+t- km4n0wgz. Compared to object 1, object 2 falls:

  94.02: A car starts from rest an5 k 5c0 a0 g:p)x7nqrmn7ciw2y tpfd4hd uniformly accelerates to a final speed of 20.0 m/s in a t5kcmp)h7aw xrn c07d 4: 5gqytp0if2nime of 15.0 s. How far does the car travel during this time?

  94.03: A ball is thrown off aswo+cm2o.f7fdjrg 1 ( high cliff with no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What wmo(d.fgw2 scf or 7j+1as the initial velocity of the ball?

  95.27: A rocket near thet sb8 m5ksoj/z7sk5d n5c6b+ q surface of the earth is accelerating vertically upward obn+857s jsd5q6tkbm /kc 5sz at $10\;m/s^2$. 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 downwa)j 0xki:m2p j8tjvl .mrds at 27 m/s at one instant. If it continues to fall, one second later m .0 jxij)2j:mk8vptl the object would be moving with a downward velocity closest to:

  95.39: A car starts from redy 1.uqp6n *gjcuhq5kkr5 57qst 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 s mh r:j1jsboivrulp5g5 s9geime n724 ;.3wh*trikes the ground with a speed of 30 m/s. Assume air resistajgi1ue25mrh l i7*h 5;bgsmsove.j 3wn9pr 4:nce can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 5 o:gfd ls3 ion6bb xri;7o.:e4.0 m/s in the upward direction. What is the approximate velocity of the object one se o :rbs6lo:bf .ig; xio3e7d5ncond later?

  98.14: How long must 1lk3rubj4n*rszb4q /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 moving yw rbg 9v+w+xjq+8d 7xdownward at 18 m/s. If it continues to fall,+wx rqxw jb++ 9vy7d8g two seconds later the object would be moving with a speed of

  17.02: A small object is releasw 9 zkz9:klme3ed from rest and falls freely for 4.00 s until reaching thekz3wzlk em 99: ground. What was the height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg 9a;hu+vq ns p6hqls0mnfr8 2v; 2djx(is launched straight 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 net force actingvfxs0la m nq28 +(pj6;n vhds2;9qr hu on the ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 kg+f.s7 aly1/dlo zhvs 6 is launched straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistz6fsy l s.hd1+oa7v/ lance. Approximately how much time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plane has speed lp ,qyptbxi3x: . f9z*0.40 m/s two seconds after it begins to slide3:l.x* , izypptxfq 9b. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower withhul t1;gk4.-l1ro m es a speed of 15 m/s-m;gsoe hlr 4kt11 ul.. 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 w1)wf )p(n l6ikzv2xpyith twice the initial speed of another, how much higher will it bei zp(12wp)y6xfkv l )n at its apex?

  02.30: A box falls to the gro2ihodnyuc /70und from a delivery truck traveling at 30 m/s. After hitting the road, it 7c o/i0y un2hdslides 45 meters 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 near the sur08n *dmu+jf gwface of the earth. After two seconds what would be the direction of the displacement, velocity an0 djm fw*8nug+d acceleration?
displacement velocity acceleration

  04.10: Three stones of p fymk*u*xda8b 0n(:/ 7xdr zddifferent mass (1m, 2m& 3m) are thrown vertically upward with different ve0ky*xm*db8zdapf( r :/nu7d xlocities (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 negligible.

  10.25: Two point objects are launched str iu)wiqw9i,d)ec. f7c1 v tpq.aight upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If object 2 has masp i id,7ce1q 9qciwuwvt.))f.s 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. After each bns3a2- :/mqnkcn ikb1 ounce, the ball reaches one-half the height of the bounce before it. If the an3sck-bnqk/n 2 m 1i: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 5/fah3,mat;on ks8tm free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of kno tmfh 3mats,58a/; launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The collision ofqnd*,s/6se4 mydlr k: 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? Ign q4knr,:/s*d6de ylm sore air resistance.

  06.03: Three students were arguing about the height of a parking garage.5 p4s +sjl6vdppvxg9 j(wb:o3 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 the ball to fall was 1.4 seconds, approximately how 4pj (lxv93wv:s5opd+sg pj b6 tall is the parking garage?

  05.07: A snail is moving along a straight line. Its initiaesu6 aj ik21 i,zqk 98,ad;j.vob 9ejvl position is x0 = -5 meters and it is moving away from the oriv, 1ej9skqo9 vi68zi j2.ke,a udabj ;gin 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 pulle7ew( )-elx/ 9-ueshh xm 3i pp8oh*cqid downwards by gravity (down the 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 the amount of time (T) necessary for the object to be released hh/3sopwm9*eecq x-ulip8 x()e- ih7from 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 tower. Half a sevwhkx naw*2ylaa l-c/)pyi2 5i y2;6ocond later another rock, twice as massive as the first, islyal phw6cy-225/; 2w a)yxiiavok *n dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The z+j) ils8bqp*cart comes to rest after ibj)pl +qs z*8traveling 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?

  07.11: A cart is initially moving at 0.5 m/s along a trcw31 lbvc /mtet/fz1q +5,daiack. 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 tracq5de3b+z/ f/m t,itv1cl aw 1vel before coming to rest?

  08.03: A dog starts from rest and runs in a straight line with a constant accel*, ddh r)+ ymubbx a4p9q+-jfca 7bwx6ed6xp yda4cf-xa*rqbbuw+ ,h +m7b j9) ration 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 rek1qm458wj w*cku yo e;st falls without air resistance from a height h above thy8mwj1kwc;e4uk * 5o qe 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 0.5h?

  10.38: Two objects both move and uniformly accw wyl: jd-8n2(yhrbt9elerate 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 t2h98nwyj:wl(rbyd -traveled by Object 1?

  12.26: An object is thrown horizontally with speed 10.0 m/s from a heizo l/srq;/v9 9s rfnnj+z3(i vght H above the grounvzrzosn9/;j fn(39sl+vqr i/ d. 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 ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The object remains in frem bzaprwo+auaqqbj 0l+0/n2p k 38/*ze fall until it returns to its initira/z+ bj/2z+u 8w* abmlan03q0okpp qal launch point. Which one of the following graphs 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 does the,4hxic z4sg4q+(s) ig(u dvqa objegq +4g4isqxsc dh( ) vi(,u4zact fall during the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.5 p4d5f /0j2k f0dvy6p fmlgotn1s*53,li pcpb0 m to rest across a flat surface in a time of 12.0 s. What was the initial speed of the box when it started opl0i nsg1*f 46m fyv2jl0/ kdbt3cdp,p 5p5f its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed o++* u ufeep/nk)rp-esf 7.60 m/s in a time of 3.00 s. Through what distance does the cae *r/++p-u n)fseuekp rt move in this time?

  14.16: A toy car initially movz / z+sosdu 2--ez7-d 1eliestnz58 oaes 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 averaosznz-1zdse7u/ead8z- t5l2i +-s o ege velocity of the car during the five second motion?

  14.17: A toy car initially moves to ;1u0jgw)/ca ,oto bvo 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 acceleration of the car during the five second mba,)1/ tcjoou o vg0w;otion?

  14.33: An object moves with constant gr of0sx:r91macceleration 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 g uom6juqj /,9in free fall. Which one of the following choices best represents the direction of tom96u g /,qjjuhe object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 second trip in t7f mlv45gm37 x4yy :itlmcat .wo 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 sem.t7 y4 m :cl5iltgfv7xym4a3conds. What constant acceleration must the object have during the 8.0 seconds of stage II?

  15.32: An object moving alongtdd3q y4o-sqs a6l/ cxd, ;zh* a line 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 right for 12.0 seconds. What constant magnitude accelerat o6cd qd-xzs/lya h4 ds;*,qt3ion 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 se69rk zu(.c. xcts-y/m mw7cmmall 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 initiall6(z sy cmmutc..9c 7wxkrm/e-y dropped rock, what is the speed of the ball relative to the rock?

  16.36: On a straight road, a self-drb2ifych0:w2c3 ,8s omy oz,l :xl)isdiving car races with a robot. The robot accelerates atfhzwl32mbc dl) sc8,iyi:,o s 2y:x o0 $8.50\;m/s^2$ 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 ov;:ruoqtk. z-f 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-half of the maxizo;r k.v:u q-tmum height it obtains during its flight?