94.01: Starting from rest, objeti/cp2yrct/, 9qv*rm ct 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, object 2,ymptq cr /iv92*ctr / falls:

  94.02: A car starts from rest and uniformly accelerates to a finalyodb,a zforwd-,ld0 n* u) (*z speed of 20.0*0u zzl y*-nf)odar,d(wod , b m/s in a time of 15.0 s. How far does the car travel during this time?

  94.03: A ball is throw-;5 hd;mw0aruptmm 0 an off a high cliff with no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/utm;5p w0;d-mrha 0mas. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the80.5 ax-mvs 4pm fiqkc 4ri:yz earth is accelerating vertically upward at iqrfixa84-pv0c :5 syz 4k.mm$10\;m/s^2$. 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 +bqte8jaid,6, * zbf/gc egasc5k 36ybe moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be moving with a downqe+8c zy6sg3abtek* bj igf, da/5c6,ward velocity closest to:

  95.39: A car starts from rex2o+f(eefa/ hz h z5h9st 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 f)*q*3x0gnepl hp3 yd)rukk 1 5w+ore of a building strikes the ground with a speed of 30 m/k)k ln +3 d)oe*yr01hpqu p3ef5rwg*xs. Assume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/s in w9 .c6s0yoskom /x: q plu*knpkq5)s 9the upward direction. What is the approximate vesp5 o c9q* osyp uxwnlmk/sk:k9q 06.)locity of the object one second later?

  98.14: How long must akjqb09 mw18te $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling object is fowf7.y r7, e,ge oo3raiund to be moving downward at 18 m/s. If it continues to fall, two seconds later ,ioea37wgre.7of ,r ythe object would be moving with a speed of

  17.02: A small object is released from rest and fals. z*qyt3 13 yro+ 68wn kry3dfvlbms0ls freely for 4.00 s until reaching the ground. What was the height above the ground fro8qn10y t 3. 6 lsrwzkd v*r3byoy3mfs+m which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward s x0mfy6n qm79;+zmpe*v.zj qao 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, wy pn6*qv0fm.9 mqa;e7x +zzj mhich 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 rises fd bmb1;k ib7l8vc1jmk2x, l/ to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much time does iiblvmb1xmf;bcd 2l,k 17 8k/jt take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plane has speed 0.40 m/s two or.kx9ql +*ux snh 1 .zi1i7cpseconds after it begins to slide. Approxis i+x9 ci.1xl. *kuohz1qn 7prmately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m towem1sotwgai1 6bkn )+7 fr with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the 1b gi7twk)osa+ f6m 1ntower 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 ir a1; *k:bywb j2e+ tobz;y4ib f2adc2nitial speed of another, how much higher will it be at ir4a eod ki*bfz 2t;2a: bw+21cb;jyybts apex?

  02.30: A box falls to the ground from a delivery truck travozt0a32 ih1 fuo 1q7ywk 7cld,eling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take thec i 1,3oo0kz fw1q7htua7l y2d box to come to rest?

  03.29: An object is thrhx9zlmqp7rn2vl: ).; vcn yv1own upwards with a velocity of 30 m/s near the surface of the earth. After two seconds what wouldnz :lp7;v )hqn.2 9v1 ymrvxcl be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) arefduq*r)74 vfo2b9 iqce50 f eq thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank from hif i e7ff4c9 )052vq*qodr ubqegh to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launchedofxa* kv*a;*n :ajz t8 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 mass 2M, what is its maximum attained height above the launch point i : **aafoazn 8*xvjtk;n terms of H ?

  04.28: A rubber ball bounces on the ground as shown. After eacha x 1 r7jp;.3thwc4wyc bounce, the ball c;pw 1cx4t. 7yar3h wjreaches 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 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 ac0bs9 ro. bnrg kw+b90 *jd3rtehieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what j3rwers*n k.09 tb9 g0bdobr+was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical clifgplu+o,cm3 47sm g 1grf. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the pebbm+4g7us lorg31,gmp cle hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a 531 9fnc+jlch2qcw8k:l q q eu+ewz8f parking garage. One studenjck3++c1 l2 qef9hcqwn:u wqe8l85zft 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 tall is the parking garage?

  05.07: A snail is moving along a straight line. Its initial positij/j ed)fp:l b2hfmd(*on is x0 = -5 meters and it is moving away from tmf* :jbj/l () e2dfdphhe origin 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 grav+i ze d)k(,hhmity (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(ki )hze+md,h 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 second lat. ojo*u:f; siqer another rock, twice as massive as the first, is dropped. Ignoriiuf.qj*os;: ong air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The cart cop - 2vysr p+0qajo)r6imes to rest after traveling 1 m. The experiment is rep 0-ppr+o2s6ja iq)yrv eated 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 miydp71); dbp0pw fv8uoving at 0.5 m/s along a track. The cart comes to reyp7fid8 d1)pbw0 v;pu st 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 rest?

  08.03: A dog starts from rest and runs in a s) mmk0h/i ejyq(e9 f/rtraight line with a constant accelerqk/mh)y /90re jeim(fation 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 rest fal 5eem6/xf wuk)ls without 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 r5ex)/ mwf u6ekequired to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerate to the right. As)ubm6ungfc8 0 0h1lgt 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 a gsn bhu6)10c8luf gm0cceleration 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 p44 z1j t pstg1wgn2/ua height H above the ground. The object gsuwpz4j nttg2 /411p 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 straigl us5 (ffx(vjy6ep :2detpq;( ht upward. The object remains in free fall until it returns to itst :s;l2(q j6p5e(e fdf vux(yp initial 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 frel-2rbw4ku1 2zpt k2kge fall. Through how many meters does the object fall during t2w4p tk2-1kg urk bz2lhe first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface in a time o 97cu k d.ccnwu*)q .mc1oq1lkf 12.0 s. What was the initial speed of the box when it started its ku91d .q.17*cc) mcqcn kuwloslide?

  14.07: Starting from resy /7ocfqb m6g,77aucb t, a cart uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Throu7 oy/uf7c,a7bc b6mqg gh what distance does the cart move in this time?

  14.16: A toy car initially moves to the right at 60/p69z rm.w35:1tujehx su sw d.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 velocity ouje t3m:61s. uxsrhd w95w/pzf the car during the five second motion?

  14.17: A toy car initially moves to the right at 60.0 cm/s. Five sec -d,o+im( kglnonds later, the car is moving at 40.0 cm/s to the left. The total displacement of the car dur,mk +d-gnl(ioing 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 velocc*l)yq+m :u-t 5hi ocvity $v_0 = 5.00\;m/s$ 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 fr3n4vx.1iq4 faif3waxqvu0. c 4p7l nc ee fall. Which one of the following choices best represents the direction pc 4uaxf wn.i.43qn31lciaq74 v xv0 fof the object’s acceleration during its flight?

  13.26: An object moving only to the right completes*gt6rrf)nc j( a 20.0 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 cot(nr f)*grcj 6nstant 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 completesx):qngh ) ,2ncno *d 9*0qhk.mtbwejd 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 vqdm:dw0n n hc9be .j* x*q)tonk2h ),gelocity 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 8.0 seconds of stage 2?

  13.33: At the top of a high clifbx r/o ef-eg3q0 n;*j)p.ci pkf, a small rock is dropped from rest. A ball is launched straight downward with an iq3c-n ji0ef /.ge bpp*r)x;ok nitial 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-q 13hk;rfeo ;lj v*a-ldriving car races with a robot. The robot accelera3;rfh jeo k ;l1*q-lvates 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 the l/hch i) q.*;rx/ef jiball 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 ix)cfeq//.; *hlir hjit obtains during its flight?