94.01: Starting from:qe30mhi;cz*ouqh k 9 rest, object 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, object 2 fallq oiu :e ;zqhh*km39c0s:

  94.02: A car starts from rest and uniformly kvlsc5a e;8l)f-q a 5+zzkehl7zw 5n; accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far8s 5v;nlzwk7 )acef5k zzl+-qa;e5lh does the car travel during this time?

  94.03: A ball is thrown off a high cliff with no ho+srkh l9pr+ h*rizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial velocity of the r+ h h9pk*srl+ball?

  95.27: A rocket near the surface of p)i0h 0)gfr)jnu5nor the earth is accelerating vertically upward at nnf)gi) 5)hujo 0r0rp$10\;m/s^2$. 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 mojhkb jtuqq.s/. s) t0(ving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be moving wi jt )0khju/s bqs.t.(qth a downward velocity closest to:

  95.39: A car starts from rqoel(w-v;4 odr:0usby- um9e est 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 strikes the ground o.nf3wm 44qj njwo nt/tj 7z2t4i ;xw.with qwjmf jot23t.4n/x.wn;z i w j7t 4on4a speed of 30 m/s. Assume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an obje6ry kji ak.;/zct in free fall has velocity 4.0 m/s in the upward direction. What is the appro /6zkjarkiy. ;ximate velocity of the object one second later?

  98.14: How long must a xrk ;bhgfa223l .ezq zdj 2q9fd-p*t-$2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling objeccr mm) 8tym;.tt is found to be moving downward at 18 m/s. If it continues to fall, two seconds later the o8mmy )trm.;c tbject would be moving with a speed of

  17.02: A small object is released from rest and falls freely for qhyppro87:9 t 4.00 s until reaching tho8: tqp rpy97he ground. What was the height above the ground from which the object was released?

  11.06: A ball of mass =0.1008lygjw5rv x20 zu6* 4jvkracmg;b +6p kg 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 g vj6*jbxk l c;m62gurpy+r50z 4a8wvfollowing 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 lakb m3eaa kfl15 1v;rbpv +1xfe4j6+ cgunched straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore6+ 5pfe4 ;1 bxgv13k+acm ebr f1lkavj 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 sucwu60mr s76g peed 0.40 m/s two seconds after it beginu66usgwr7m c 0s to slide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top ofjpm -*/ym ue8x a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) fromm-j x/*uym8p e 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 divh+ estkw-v n, v.l cy;6fd(* q*kulb3rectly upwards with twice the initial speed of another, how mucq uksctw( h*+;le3n6 l-*kvvbf,.dyv h higher will it be at its apex?

  02.30: A box falls to the grouek/(yz +uy dia;2tyv:nd from a delivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it takez u/k2y ;eva:ty (+idy the box to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/s near the sukbkgnc3ip74a - x(:marface of the earth. After two seconds what would be the direction of the displacbn 4k7mip3x:(- gcaa kement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vertically upwardn y uq3u)vw-bsi)zl*8 with different velocities (1v, 2v& 3v nzbu8i s-)qwu l3y*v) 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 objekscqy/ 94ef7c1 vhp*+js1g fl cts are launched straight upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If object 2 has mase+vc/lqjfhs gyc1pk9*7 41s fs 2M, what is its maximum attained height above the launch point in terms of H ?

  04.28: A rubber ball bounces on the ground r-8cq*ou2n9jn55 n0yhpl ; wyuf:jed as shown. 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 and second bounce was 1 sec5y2cuyp *nq:ojnju8-rfn 9hwe; 05dl ond, 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(x)kf/stv05 ewm6bzr minimum speed during flight. If that minimum speed was 15.0 m/s, what was tk5v)esb/zt rf(6w0xm he projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The colli9rx e u4v9foz dyicy9(zb02v2 sion of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the v r9u24o(iy9ecy9zzb2xvd0 fpebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the hexf* 4kcfx9/2g10jga b qu 5jdtight 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 for92 5 4k/jxx1ffjgguda bqt* 0c the ball to fall was 1.4 seconds, approximately how tall is the parking garage?

  05.07: A snail is moving along a straight line. Its4d6 hm k6bdseca1 tc9/ initial position is x0 = -5 meters and it is moving away from the origin and slowic9dsb6 1cekt /dh 4a6mng down. In this coordinate system, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-likex 3bgbrp8o 9jwl3*r;g 67udte object is pulled downwards by gravity (down the plane of the page) but is constrained to exactly follow each of the fr bg;xe8p*7 b rj63g9du 3rltowictionless 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 it takes negligible time.

  06.13: A rock is dropprdv3)y + 3+zf w7fcpqned from the top of a tall tower. Half a second later another rock, twice as massive as the firs3+v 7fdw+ )fqynpz 3crt, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a tr czvx(n uvzy/g:;7 qv ngo;;p,ack. 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 travel b;z:/qv;u c x g znp;n7(oygv,vefore coming to rest?

  07.11: A cart is initially moving a -4rryf nu .p;ox8acz.t 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 moving at 1 m/s. How far does the cart travel before coming to rc z-;uorxr 8ynaf 4.p.est?

  08.03: A dog starts from rest and runs in a straight ls;*9ujq*vbqo5f63 b ev ot:nline with a constant acceleration of *oq935ljsvbfe :u 6v;qt *obn 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 aad.tf,8afj*9 w- 9pl eou:hdat rest falls without air resistance from a height h above the af:dep9jf ld-9 uoa,ah*w8t. 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 accelerate to the right. i 2(x6bjum)t 0v/yomeAt time t=0,the objects are at the same initial position. Object 1vy02biu jx(tm/o6e )m 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 ssly.n ek2 3c25w5k u.hwjc;sm peed 10.0 m/s from a height H above the ground. The object reaches the ground with a csu;nmkkey5hs2.w cj253l .wspeed 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 straightz3 nd 7o5rymz-i 7x./xg.lgjv 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 function of rdog x.gznxyi/lz5 3m .v7-7 jtime during its flight?

  14.03: An object is dropped ibat dwxyrwrl(4wg9/v81 k8gu -*9lsinto free fall. Through how many meters does the objectgk9w(ug4 d9alr s-*8 ww8xb/r tivl y1 fall during the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surfa4lle k du9ul4c*hu2i0ce in a time of 12.0 s. What was the initial speed of the box when it started its sli4dli20 uk9*h u4cl uelde?

  14.07: Starting from rest, a cart uniformly accelv;6g4zt yz59bc6-ra4be: z xi -jws jzerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance d6wcz;4zr9j yxa:j 4i tze vsbg5--zb6oes the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five seconds laters2j;q3s (:opz/ * gsn 9haare,6lu 0mfkn2hmp, the car is moving at 40.0 cm/s to the left. The total displaceme,aplsg zhp ak omq0n*m;n(eur s2h/269:sjf 3nt 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 motion?

  14.17: A toy car initially moves to the right at 60.0 ca+x au- p*a4k6)kj ttxm/s. Five seconds later, taa+x6 kau-t*tkjx) 4 phe 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 motion?

  14.33: An object moves with constant acceleration starting with velocitydot22r1whk+ 2lnt 2ir,3faj y $v_0 = 5.00\;m/s$ 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 wl 7t*;kxs yo1ehile in free fall. Which one of the following choices best represents the direction of the objec1klot;e7xy s *t’s acceleration during its flight?

  13.26: An object moving only to the right compl)kvdvev zzo(6/55hs++omt oeetes a 20.0 second trip in two stages, I and II. The average speed of the entire trip is 10.0 m/s. For5v)ev6kzo5d /smteo+vzo (+ h 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 2g v3- bpzxa2 .etdt8/h0.0 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 acceleration directed to the left must the object have during the 8./d8-tz. h v3a2gbtexp0 seconds of stage 2?

  13.33: At the top of a high cliff, 0o a9ayk 5cp b78xyl*oa small rock is dropped from rest. A ball is launched straight downwar7bcla9 oy5*8kpx ayo 0d 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. The robot acc:t6ferh+oq c: k dc g ,vk7q946es)hfceleratg6rcqec ,4q+f vs7k 9eh)okd h::c6 ftes 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 positioyf jm0bwa-v7f ( vb3k4n 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 itvab3 vj-4b7 (kyfw0m fs flight?