94.01: Starting from rest, object 1 falls freely oaov7dbczhes ,. /tqh- n6:v;fzo d(3for 4.0 seconds, and object 2 falls freely for 8.0 shov. o-zn /sf 3zqdbd6:7 e,( ch;oatveconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly acx ir vxn4 qkval7 0h7i)s p,s/tfs87zcq,:ak1celerates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travel dvs7 ics qtvz x, a 1xaq:4r7si/ l7f8nhk)k0p,uring this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. tykzf 6 p59qf+8znh g7It lands 6.0 s y+n6k9h7 f q5 gzzftp8later with a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surf9ld4 9xi/vm idw c8ql)ace of the earth is accelerating vertically upward at cwd4qmd8 vl/9i)li9x $10\;m/s^2$. 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 mouzq/x 93n clb8.z-csgving downwards at 27 m/s at one instant. If it continues to fall, onel/zqcgnz 8 c-3 9sxbu. second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest 0,s x)teg*ab4 b ujvp8and 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:j 2*4tyr xmw 8adf9m,vpx/ kk the top of a building strikes the ground with a speed of 30 m/s. Assume air resistance cajxx /:8, mpf 9w*t mkyd24rvkan 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 the upw6sf2lc+ / hucxard dires c fh6/lx+2ucction. What is the approximate velocity of the object one second later?

  98.14: How long must(zzc3 kh, 3qpv 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 found to be moving downward at 18 m/s. If it c ,jvboc 07h):klcb)lwxap)4 lontinues to fall, two seconds later the object would be moving with a spov:) xjk,4cabl7b)c 0l p) lhweed of

  17.02: A small object is released from rest and,i 5gn7bgfilzxd8tu19z n;/j falls freely for 4.00 s until reaching the ground. Whatn 7 b/lugxi9tgj;5zd 1,fn i8z was the height above the ground from which the object was released?

  11.06: A ball of mass =0.10 jd c;;tm6oiy)/f1kse lnt: i00 kg is launched straight upward so that it rises to a maximum height of 12.0 m abovt/c:t6 ;dyil e; 0oj in)msf1ke 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 straigh.i :u8moq:om nc zz5y9t upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how m8.zm5 o:y:zoimc n9 uquch time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclr*vtoj ..u 5sjined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately howujo 5s r*tv..j far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower with 5uk/+ljusnn. a speed of 15 m/s. Coinl+jn u ku./sn5 II is dropped (zero initial speed) 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 three. zstf.i 6h) o9g9/tqkd(bgkr(+ih own directly upwards with twice the initial speed of another, how much highe)gez t.q d/b oe9(+trhigs.k h69fi(kr will it be at its apex?

  02.30: A box falls to the ground from a;0g vki+2amr+9iykr g delivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box to co29 ki+ km+;iy vgarr0gme to rest?

  03.29: An object is thrown upwards with a velocity of 3l x u;3uanfp/brl*s71 tuhj*4 0 m/s near the surface of the earth. After two seconds what would be the direction of the displat pfx4l aubn *1*/j3;s lh7urucement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m,9+s 88cm.cl f tnpc/y4pyuu(k 2m& 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicatesms.( u 8nyfckpupl4ct/ 9c+8y 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 objec/jqz . ag2ssn,ts 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 mass 2M, what is its maximum attained height abovsn/.asq,2gz je the launch point in terms of H ?

  04.28: A rubber ball bounces on the ground as w0xmrd 6j r;t.)lqy-mbp w2 7v-rmilbj r:*5fshown. 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 second, what w x0-.lbtry-mr2lwjvd5i)mp :m *qr w 7j6r;fb ould be the time between the second and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fall achlh36kb* ,l)0cp x yk:hbdjff0jr 81b+mbd3vjieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what bdcm0p l0j h833+ by,kjffr*xld1 bh:j6bv)k was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The r.ewl 4 5k2urqcollision of the pebble with the ground below is seen 1.50 seconds after the pebble is droppel ke. qrwr452ud. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking garage. One sc x44 m)gzhegh5 mepwq2 b*y:bdga:*s.vq:)n tudent suggested that to determine the height of the garage, they simply h*yg4 h:* aedg4p gmn2m)q)bqz: w5v:xhes.c bad 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 position is x0 = -4tn6 y kx0q8;uj(p tng5 meters and it is moving away from the origin and slowing down. In this coordinate system, the signs of the initial position, initial velocity and acceleration, re;4g(jxn p6utkn t8 0yqspectively, are

  04.38: A small point-like object is pulled downwards by gravity (down the plp)qyk. 5v;a sxane of the page) but is constrained to exactly follow each of the frictionless pathways shown. Rank these thsk); vay .xpq5ree 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 tall tower. Half u/h a*mdy 4di9a second later another rock, twice as massive as the firs*y9im u4d /hdat, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along 4podp:g-1u nm(xwyc+ a track. The cart comes to rest after traveling 1 mpmc +x4unoy(g 1- dwp:. 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 m/s along a track. The c z4+ 9k glbqz:zi(ovekd-,lz/ art comes to rest az / bz:lz -eklgdikzo(,qv4+9fter 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 straight line with a co7+g6 xg3tsle vnstant accelersx 6egt3+v 7glation 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 falls without air resistance from a hel;:g tkru 2m7pight h above the ground. If the ball falls the first distance 0.5h in a time t, how much time is required to fall the remaining distancg:rtk7pu;m l 2e of 0.5h?

  10.38: Two objects both m)a6*u2jfls kd; c0 ywhove and uniformly 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; Objecu2yjdwl0)6ca kh;*s ft 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 w o)zin/f 7f:cfith speed 10.0 m/s from a height H above c:)/f nffo7zithe 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 ground? Ignore air resistance.

  13.10: An object is thrown straight upwamyy bn4z9it ,7rd. The object remains in free fall until it returns to its initial launch point. Which one of the fomitb yy9z,n4 7llowing graphs could represent the velocity of the object as a function of time during its flight?

  14.03: An object is dropped u2p:rl f;*,r0vzzz-rud 7d ccd, vw:linto free fall. Through how many meters does the object fall during the first 3.00 sr rc*0lzpf;2r7, w-dz dd,ucl u vvz::econds of flight?

  15.02: A box uniformly slides 7.50 m toocv8e nce muu*3hi+gp3 /w))t rest across a flat surface in a time of 12.0 s. What was the initial speed of 3*)i8oc/peu+ug wtv 3hcmne )the box when it started its slide?

  14.07: Starting from rest, a bz30trvatrbnik)13-hl5n 2.lqmwz .cart uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what disz33rk i lvat.2l-mnr0w)t1z nqh5 bb .tance does the cart move in this time?

  14.16: A toy car initially moves to the(+qbvq; ;au /w.wsu tk 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 magnitude of the average velobqvswt+k(a.u ;;qu w/ city of the car during the five second motion?

  14.17: A toy car initially moves to the right at 60.0 cm/s. Five seco k:gd/9yfaa m1nds 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 choifkmda1yg/ :9aces best represents the magnitude of the average acceleration of the car during the five second motion?

  14.33: An object moves with constant acceleration startih *di), y3fdcbng 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 falllsji )4v3v -3qzid5jk . Which one of the following choices bestkv dqs-i4 j)vljz3i5 3 represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to th lf ,1n(je*bshe right completes 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 constant velocity of 6.0 m/s for 12.0 *nfj,ehl1(sbseconds. 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 20.0 second trip with an blbauz3gs u7:y: ;4we 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:z3;wsu b b 4:7laeguy to the left must the object have during the 8.0 seconds of stage 2?

  13.33: At the top of a high :/si 2zn buwf)mpp6n* cliff, a small rock is dropped from rest. A ball is launched straight downward with an initial speed of 36 m/s at a ti*w ps/p)f6:nibmnz 2u me 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 race 9ecvp yj1*+xcyt9zn:s with a robot. The robot accelerate1ey9 tvcn ycz+ xj:9*ps 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 positi jt(m/- n z(v /rlzw66zfu9hzjon 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 vertrt-hjwumf ln/ j zz/9(6vzz6(ical position that is one-half of the maximum height it obtains during its flight?