94.01: Starting from rest, obje*4pe m m0f. at:pz8rmcct 1 falls freely for 4.0 seconds, and object 2 falls frec.tz :4 pmrpa* e8fmm0ely for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates tup0m+ji486d(g ewy abo a final speed of 20.0 m/s in a time m(u+ 6abg ypjdwi08e4of 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 lan1sc9/otl7a , miz :c)/h/ics.r yhlvp ds 6.0 s later with a velocity oomp9/t, .:/sllc/zra1sicchv ) i7yh f 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is accelerating vertically u d(d. qutw7el( 3xkq0ypward a(qwd3 qku deylx7.0(t 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 downwards at 27 m/s at94/t: ogit;pg( shdsv one instant. If it continues to fall, one second later the object would be moving with a downward /vt gohg:ipd4s9t(;s velocity closest to:

  95.39: A car starts from rest :4 n qga71y hzg;jb9oband 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 loh v6q:f zsy8b6l 0,xstrikes the ground with a speed of 30fhqb6s6lx 0z o8, y:vl m/s. 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 vnux )3m*zbfy7 itlmt/t4y9k 6elocity 4.0 m/s in the upward direction. What is the approximate velocity of the object one second l6zx7kt*3t n/) f4tulmyb 9miyater?

  98.14: How long must a l d rw.bjp/:y)$2.5\;m/s^2$ 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 downward at 18 m/s. If it csae3tyad: (1b, ky9elontinues to fall, two seconds later the object would be moving with a speed ofb9ey,1(kde :atls ay3

  17.02: A small object is released from rest a(f dex ozn6e f95j za,i- 4m1)lz0vrnnnd falls freely for 4.00 s until reaching the ground. What was the height above the ground from which z) arlv 4e(,fz-nj9fx di5me0on16nzthe object was released?

  11.06: A ball of mass =0.100 kg is launched straight upw tqjo-ko3il96ard so that it rises to a maximum height of 12.0 m above thejloi9 -63koq t 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 la*ppx8we*f6a i 1a0hg vunched straight upward so that it rises to a maximum height of 12.0 m above the gv *1p06aha iwpxe*8 flaunch 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 speed 0.40 m/s4qif+zvbjkcv88-om ) two seconds after it begins to slide. Approximately h-f4jmvc+ kvqzi8b 8o)ow far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower :uzqyvcv4d5hm/ane4w( )( -ry z*fzi q)yg q2 with a speed of 15 m/s. Coin II is dropped (zero initial spe:4)yz5-eqm yn a vi()* wcyvzz4 2dh/ug(qrfqed) 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 with twl(edo) 43v z4qbj, 3nghtj og6ice the initial speed of another, how much higher will it be at its apex? eg3q4vlb4jg(3 z ontjh d6),o

  02.30: A box falls to the ground from a dei fbb6oe)i69alivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How longb6af )o 6i9eib does it take the box to come to rest?

  03.29: An object is thrown upwardsgye ;ufr(+ cg+xs*e7i with a velocity of 30 m/s near the surface of thex* gfe+;7y c+ruegis( earth. After two seconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass ( 6 nr)b+cqrna01m, 2m& 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each st0rbn)q c 6arn+one. Rank from high to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched lm f41 k64cqikstraight 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 lflk i1m4k4c q6aunch point in terms of H ?

  04.28: A rubber ball bouncu-rgnka://op3cy i8bes on the ground 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 betwee u/3r-yp:ai g/bn8ck on 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 faliqfr lf5- )k)n9u x9kal achieved its minimum speed during flight. I in-uffr5a9x q )9)kklf that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The collision of/ ;okkvs)smv :l m/n nky 43k;cbx/pp/ the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did b ov)3m/kp;vl4/n;yp/ ks xk/ms nkc:the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking g)e7mmxk.cm +rx3 - qqm9d;xi6uz zhp2arage. 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 tall is the pax; kmmiz6ucrq )9e2hx.z3qmpx7+md -rking garage?

  05.07: A snail is moving along 3*a3u-v r jiu asx5)r3ib f,c7n6tqmva straight line. Its initial position is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate sysjv6u-csixri f3, *nrm5q33abuvta7 ) tem, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is p3 gt f.sf sn/a.jwf.m-(rl) qrulled downwards by gravity (down the plane of the page) but is constrained to exactly follow each of the frictionless pathways shown. Ra 3(s).ftwrmjl-qfsr. gn/f. ank 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 dropped from the top of a t;q/nwv6j/*y ia(k h yiall tower. Half a second later another rock, twice as massive as the first, is dropped. Ignoring air r6wh* q nyikvi/aj(/ ;yesistance,

  06.18: A cart is initially moving at 0.5 (ez6x bza4b lfx2t,0q m/s along a track. The cart comes to rest aftez4xabb l,(tq2e0fz 6xr 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?

  07.11: A cart is initially moving at 0.5 )1 r 0bjgh5rm8+k-7c/pcxl-cyxhfg p m/s along a track. The cart comes to rest after traveling 1 m. The experimentcj/l+ cyrrgchm)xg0b5 - h1f ppxk7 8- 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 constant:,dfihd6pawb ;jk+lje7l wv6x615ma accelerat5w6lm:vd wbdj;7afj6+elaxh1 ki,6 pion 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 fatr3c -;3jiv djh+g 1eells without air resistance from a height h above the ground. If the ball falls the first distance dj- + ;3g3h ejiv1rcet0.5h 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. At time t=ia76k pa 3v by+2rxos:ej u,7a0,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 tim6+bp yoai7e :arv2a7k3s xj,ue 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 10h3ntymve2 -s9.0 m/s from a height H above the ground. The object reaches the ground with a spe29e -y vn3htmsed 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 strai/xnmv7zw6a,)u8wgf p ght 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 functiovpw 7/),mfg uan 8zxw6n of time during its flight?

  14.03: An object is dropped into free q3 ;vedqc9l1m11vrl jb,tuq 0 fall. Through how many meters does the object fall dur3 9jlvq1u t;l cqed1,rv 1qbm0ing the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50e8 s:;.y2a c-ifib mvw m to rest across a flat surface in a time of 12.0 s. W:s2- bcay;ivm wef i.8hat was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart unifoyms(/qwje: tel4 2cbu3xxdxp175w)s rmly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does the ct (l)/ pq1ed24yb7s wx:ej3m5ucsxwxart move in this time?

  14.16: A toy car iniolv2 9p2qom1jbtjh 9a 0wf-jrb09j+ u tially 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 the magnitubv9j+12t - 9po0jo rbaq m92wf luj0jhde of the average velocity of the car during the five second motion?

  14.17: A toy car initially moves to the right1x-xz j;:rm dsm rod48- 3r z:hqbu.dt 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 followtdor :rr z :j-xmq4-zhx1du3 . 8db;msing choices best represents the magnitude of the average acceleration of the car during the five second motion?

  14.33: An object moves with constant accele8g1j v6 qhmt;nration 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. Which ofyzre3 t,sl cn r56*zn7ker++ ne of the following choices best represents ther ++ nzlnr6yztsef 3erc 5k*,7 direction of the object’s acceleration during its flight?

  13.26: An object moving only to the q z62i(g8 fz 7ae0iipsright completes a 20.0 second trip in two stages, I and II. The average speed of the entire trip q0p6 zf a2ii7es( g8ziis 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 stage II?

  15.32: An object moving aabb0 /;v3*n zteep(t 8+qn ujilong 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 velocibevtnabe tuqi+/* 0z 38n(p;j ty 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 cliff, a small rock h,yz ,wqb:ft.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 h zbqfh,,:tyw .as 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( irn0ol*qsbl y8 5wveb 4mlg +o1j4)a robot accelerateb 5mlj*w(e+ 1oin)vsllbar4ogq8y0 4s 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 launche3zkcn68 qnt2 yd vertically upward. The vertical position of the ball 0.70 s after release is the same as its vertical position 4.10 s after its release. At what k28qcy3 t6 nzntime is the object first at a vertical position that is one-half of the maximum height it obtains during its flight?