94.01: Starting frommbne -t9kr a6wzq8b7 kh p.w9) rest, object 1 falls freely for 4.0 seconds, and object 2 falls k 8. praqntz9whk)wb -6me97bfreely for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformligq42es ,o-se1sojg0ub (t 4v y accelerates to a final speed of 20.0 m/s in a time v-ts u(4sij4eqe1os0 2g ,ogbof 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)( b94c)p g gm8enkazo lands 6.0 s later with a velocity of 40 m/s. What was the initial velbz (89enk4mgapgc ) o)ocity of the ball?

  95.27: A rocket near the surface of the earth is sq5qd fsh8h-658( +sew dqvb yaccelerating vertically upward athhdys5(qw 8qs- 6f8d bvqe+5s $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is found e .fat.c8 k bklpw:f,u:+hi(rto be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be moving with a f.r, cfl :8ikhapkebw: (u.t+ downward velocity closest to:

  95.39: A car starts from rest and accelerates at eom p17.i.r vz)rvc..s u1nqn$0.80\;m/s^2$ 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 8 ev v5,emqi/ewi/nd s-4eox/strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of the buildi mnoe-4 8evx s/5/qvi ew/,iedng is approximately:

  97.09: At a certain time, an object i3ov:i x*t )az4mtobh8 n free fall has velocity 4.0 m/s in the upward directio bmot*4 iza38ot h)vx:n. What is the approximate velocity of the object one second later?

  98.14: How long mustpj8gg9z) 0w)dixqqp; ob uv +0 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 f/74 w;p4suoicpb-z*oct5fa ( lrmal -ound to be moving downward at 18 m/s. If it continues to fall, two seconds later the object would be moving wit4-u7p*o fac/-;ilob(5l4rc az pmws th a speed of

  17.02: A small object is released from rest and falls freely 88) eqn8kkre -sh p)rqm 8y po27bg/cafor 4.00 s until reaching the ground. What was7q)nyp2cse 8qk/ekh )pom r88 rb-8ga the height above the ground from which the object was released?

  11.06: A ball of mass =0.k y) kbrhpqg4 (vt;a)8100 kg is launched straight upward so that it rises to a mht8 a(q;4vk ))rpkybgaximum 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 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 riseshx- 7ii8t8q wj to a maximum heigh7q ij 88witxh-t of 12.0 m above the launch 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 pl:5nsz6 aah,rav cn6w: ane has speed 0.40 m/s two seconds after it banrvs: haw5c,z 6a:6negins to slide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of + e4lk3tc ce8+:twymqa 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the to8+lc mqwykc4+ te:t3 ewer 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 initia no(2nwow+8lm l speed of another, how mucoown8mnl(+ w2h higher will it be at its apex?

  02.30: A box falls to the ground from a q)xi4nyi q nnzc*2;+xdelivery truck traveling at 30 m/s. After hitting the road, ii4nn* qz)ixy ;cnq+x 2t slides 45 meters to rest. How long does it take the box to come to rest?

  03.29: An object is thrownrw+vi;cj:rtzyqu6 8s-axn53 upwards with a velocity of 30 m/s near the surface of the earth. After two secondssacy x wi368nz-jvt:;5r +u qr what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vertic3 eg2y r4yc9y:f/aksbally 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 negligibl4r y2fg/:syc akey93be.

  10.25: Two point objects are launched straight upward with identical l8+)cpw yw et6w /ms1n/msan o8qhu2/winear momentum. Object 1 has mass M and reaches a maximu/cmpoa+/ws)wwnqw 28 1y m6 eht us8/nm height H above the launch point. If object 2 has 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 ans uv .t3 p(f 526+pf-yutagazs shown. After each bounce, the ball reaches one-half the height of the bounce before it. If the time the ball was iuaaf+ yn.p56vf( uspt g t3-z2n 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 projectiu:z *hy)*dc73j dji qole in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial ang jo)d*cqyj7 h3d *u:zile of launch from the horizontal?

  05.02: A pebble is drop2lnyte*ml.x4 m8ac6 fped from a high vertical cliff. The collision of the pebble with the m.n t8e6mxlalyf42* c ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height opab j9jn.l(x1 f a parking garage. One student suggested that to determine the height(lb1jpn .xa9j 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 parking garage?

  05.07: A snail is mov ai-vw 4b7.lpykc21 hzing along a straight line. Its initial position is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system,zc7p.bi 4w h1yv2la -k the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled downwards by gruo+ee:;h bt)jz()8lf6 mcnia avity (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 travel to point B. Assume that in changing direction that there is no loss of energy and that i+ zb6e; ))jla8feochm ti:(nut takes negligible time.

  06.13: A rock is dropped from the top of q;/cce/e2mk.ktah5r a tall tower. Half a second later another roq / /k;ca5ekcth. mr2eck, twice as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving 8 y9/e 5l0gvi ttqijk8at 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 now the cart is initially/k50itqit 89ygl e8jv 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. kptss u 0pn7)7The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is ini7p0pus) s tkn7tially moving at 1 m/s. How far does the cart travel before coming to rest?

  08.03: A dog starts from rest and runuoy. *1sy 4vxvs in a straight line with a constant acceleration of sox14yu.vv * y2$.5\;m/s^2$. How much time does it take for the dog to run a distance of $10\;m$?

  10.29: A ball initially at rest falls witp24 u,eswz;z3gugl6g5: bcnrhout air resistance from a height h above the ground. If the ball falls the first distance 0.5h in a time t, how much time is required to fa52u;bw zc,s pl: uzg6er34nggll the remaining distance of 0.5h?

  10.38: Two objects both movecnss ut(,j1/b1(s y5zmo e+ts 4) iwgn and uniformly accelerate to the right. At time t=0,the objects are at the same initial position. Ob5c (11sz,t+w /y)gsoueni m4b stj(nsject 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 traveled by Object 1?

  12.26: An object is thrown horizontally with speed 10.0 m/s frobijxbn 37 b-l5m 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 bb57xb3jln- iof the object’s flight to the ground? Ignore air resistance.

  13.10: An object is thrszig0 :;7d,v yy qv7/ liyua3nown straight upward. The object remains in free fall until it returns to its initial launch point. Which one of the following graphs could represent the velocity of the object as a v0,qv li /uyg3s; y7y:ndz i7afunction of time during its flight?

  14.03: An object is dropped into free fall. Through hob5fq0lu pc. ,hxf)5wp )yknr0(zrfg3w many meters does the object fall during the first 3.00 secon,w pr550y 0z3kgfnxfbphl ).rq( ucf)ds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface in a time ofo0a 77g alc-pu 12.0 s. What was the initial speed of the box 7 7aclu a-o0pgwhen it started its slide?

  14.07: Starting from rest, yy z: 62)y/gwwj/kwaia cart uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through whzw/ wjky a6/wi: y2)gyat distance does the cart move in this time?

  14.16: A toy car initifxe w5oq ;*ye huy93n6pv35xsmswx i,a) :, apally 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 t5:6* hfspp x,,x;q y9soeww) v3myuex3a5i anhe 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. 38vi tw/ ba,hfFive 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,/vwah8fi t3 b following choices best represents the magnitude of the average acceleration of the car during the five second motion?

  14.33: An object moves with cok3 b1h/gdj5odnstant 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. Whic46m9ewf t;g9 besbhtly v- sv 1*sm9y8h one of the following choices best represents the direction of the object’s ;wt19f stvs -*mlhg6v ys 8eb94ybe9m acceleration during its flight?

  13.26: An object moving only to the right completes a qs;mv 1h(o /1s ai,+uz6gji1x* dtwqr20.0 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 of(+*g i;11qo6vuawxqijd sh mt1zr/,s stage II?

  15.32: An object moving along a line completes a 20.0 second trip with an averagwq/ 0 j0c6l; 2lkunop,gqlsj6e 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 mj 0pugl qk;q,n woc2l0 6/js6lagnitude 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 sm/- 6dmmy)feoe all rock is dropped from rest. A ball is launched straight downward with an initial speed of 36 m/s at y/-emmd)e6fo 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, f-kf uk;,,jn;- py+j b-lrbcfa self-driving car races with a robot. The robot accelerates atklu--n,fk ;-bj fpc+f, ;b ryj $8.50\;m/s^2$ 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 vert3yto4nl6pi5 r ical position 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-half of the maximum height it obtains during its flii3tp4 oy6lr5nght?