94.01: Starting from rest, object 1 falls o2nlgk;b*6dufreely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, ob2gb *kld;onu6 ject 2 falls:

  94.02: A car starts from rest and uhfxe( f v.h0tik x457uniformly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travel during uti(7 kve0f4 hxh.5xfthis time?

  94.03: A ball is thrown off a high cli-zev*nkhd/t3th5- f3ka/o gfve vj6u*h/e* wff with no horizontal velocity. It lands 6.0 s later with a a/ekk-od zvt/uft - *wv*j fhnv 3eh6 g3*he5/velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surfacel-yu qf8lyd 7r y86zu )vb 9az/mzk1.kla.4ee of the earth is accelerating vertically upward ablefzr m9 z)ylky e1.u6zly . kuq7a88-4avd /t $10\;m/s^2$. 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 downwac ,glju3 ,4 j0j8kni, viqkmz4rds at 27 m/s at one instant. If it continues to fall, one second later the object would be moving with a downward velocity83nu vg4jic, 0j kmq4k,zji ,l closest to:

  95.39: A car starts 4x; d+zm: sjwxf2oh, efrom rest 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 thd7ynxz/k al9(l w+v;ge top of a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of the d(7xlvag;k z9n/+ lywbuilding is approximately:

  97.09: At a certain time, an object in free fall has jcwt7jb:xe 8 1velocity 4.0 m/s in the upward direction. What is the approbt c7e :18jjxwximate velocity of the object one second later?

  98.14: How long must 7txxa.,jd9 wqa $2.5\;m/s^2$ 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 z)8i2sw;et5dods nk9m ah: 7xbe moving downward at 18 m/s. If it continues to fall, two sec a;5z2 ikwt7:d9) se8homsdxnonds later the object would be moving with a speed of

  17.02: A small object is released from ressg,ou/t +1n )ves3p qzvf77xmt and falls freely for 4.00 s until reaching the ground. What was the height above the ground from f/3ns7v 1ex,qg 7)tvmz+p osuwhich the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so that it riqb9+ bb : zql/v:ls5dbses to a maximum height ol/z5vqbbbqds9bl: :+ f 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 ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 kg is launched straight upward so that it ris de9t/ *o,zknbni-wf xw u .eop0w/h(8es to a maximum height of 12.0 m above the laund.f(*n oboip,tuxzn/h8we /w k9 e-w0ch point. 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 down an inclined plane has sw w(x7bnm8(ovpeed 0.40 m/s two seconds after it begins to slide. Approximately how far wwn m(ox78 b(vdoes it travel in three seconds?

  98.40: Coin I is thrown upward from th uikux* y8.fu/e top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the topuxuy.kf 8*u/ i 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 u .z i0bt-4ljxm yhws47pwards with twice the initial speed of another, how much higher 0h4 ixytl74wsm-j bz .will it be at its apex?

  02.30: A box falls to the *8 0 y amgzqyw m5p*scizz(*;cground from a delivery truck traveling at 30 m/s. After hitting the road, it slides 45 meterqca8 zc;iy0 * y m*z5zm*sgpw(s 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)*khc/- jy7wg upn v:gu6 (ocv surface of the earth. After two seconds what would be the direction of the displacement, velog6(- oncv:pwgvc /kj)uh uy* 7city and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown verti3 i(8/ju1qam2cvn m 4 hc(wbbucally 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 e 831b4m(iju/hwcqm2cnav (bu ach stone. Assume air resistance is negligible.

  10.25: Two point objects are launched strai nftpt04 *vbn:ght upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If object 2 t *nv4b0np f:thas 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 shosygg)no7-s7,t ii )yfwn. 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 n7-fs) oi iyts,g7gy) 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 its minimum q/t.y0a8*gyqdu hl5 nspeed during flight. If that minimum speed was 15.0 m/s, y*l8qd/5.gt nya0uh q what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical,b8*; irpbmkdzoj7w cnz;8 *b 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 the groi7 ; wzrk8cm8 z*;njbdbpob,*und? Ignore air resistance.

  06.03: Three students wy u;yn u1v w c(-xg:1vyrky76lere arguing 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 tyk-;wl 7 x1yn y 6r:gvvyc1uu(he 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 straight5*ca9 ;5j9ex 0pax h,ocbo7 f-mhtgjk line. Its initial position is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system, the signs of the ijtcacob9;9-h75mg0k ox5 *pej, hx a fnitial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object 5f0zvan :s*dhis pulled 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 from rest at point A and travens0d5a :zh f*vl 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 droppeqdd h/:yoy9 /cd from the top of a tall tower. Half a second later another rock, twice as massive as the first, is/:9/h qd ydyoc dropped. Ignoring air resistance,

  06.18: A cart is initial f t*:u3pt6dhvly moving at 0.5 m/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but *t6tv3p:d fuhnow 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 j4e-ezt. to86s6 )ne8 al/qunz to48pek5v mptrack. The cart comes to rest after trave8o)tz6jpvtq8s 8 lne4ke zt6/aue -n .m5 po4eling 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 from rest and runs in a straight line with a constahsur 03a8i5pzcj,h1ent acceleration oh3ejc s rh0zap85 1,iuf 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 xfb jv1*hj8 ox:,l4 vjat rest falls without air resistance from a height h above the g,h1ljf*:jvj x x48obv round. 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 uniforml; ;izzjl8ifx6x)c s:n y 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 acceleratio:jz86f ) i;xl;cxzsin n 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/s from / xq.0mb db.ggs2kxo: 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 groub.gg:xk2 b/.0oqxmds nd? Ignore air resistance.

  13.10: An object is thrown straight upward. The object re9ikf) c)zmpt7dd) t hcvt8;)umains in free fall until it returns to its initial launch point. Which one of the following graph 7;td)t)md ztpc8uvf)ch i9)ks 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 n5x -4k c n+wyuj5jb0fobject fall during the first 3.00nj5jc-xw k+y5f 40ubn seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a 60 lyc-yde8cannr at230 ghh c +d5+pvflat surface in a time of 12.0 s. What was the inrc 0t 3dy 0p+eganl-2hncay d865ch v+itial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 7.60 m/3ct(3/;d j0c n jijytls in a time of 3.00 s. Through what distance does the cart mc 0cjyj3nd ; (lji/tt3ove in this time?

  14.16: A toy car initially moves to the right at 60.0 cmiu*qa) b0uasd73y +ai/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 oiiq s*aau7b 3uy)0d+ ane 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 atp:h(8: urop 7 k*jiefq8uuj;n 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 ljp:e*u(ipro ;7 hun8:8j ufqkeft 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 accev34k 6hei nbz1glc emag,263cleration 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 iu4 dro*igab(h0r-f;h 7c; i dnn free fall. Which one of the following choices bech;i7b0hn4rfr- *; dui aogd( st represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 second trip in two stq*mn.-brzw1q( afs m)6 .ktm8ra+z e yages, 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 qmr*.aza6+. (1s eyz-f mbtmnqk r8w) have during the 8.0 seconds of stage II?

  15.32: An object moving along a line ct8kw6wimqj r t0 9;*cmompletes 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 rightmj;rt9 0 wc 68iq*mkwt 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 rock is dropped fro,h83ma az-xr mm rest. A ball is launched sa3,zm -mh8 rxatraight 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 self-driving car races with a robot. Thz 82tbn(ekpu. e robot acceler2u(npbke 8t z.ates 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 ver/k s v8)(w4xyvge0ku dtical position of the ball 0.70 s after release is the same as its vertical position 4.10 s after its release. At what tim/w 8x (vgs)u0kk4y vdee is the object first at a vertical position that is one-half of the maximum height it obtains during its flight?