94.01: Starting from restx zxhw)l74 ny .gc+0w czytj+c8 ent/;f*v,xh, object 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, objecy +w/ zn)n.x0tf4*;gyc+ l8zxccjeh,wxth v7t 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a finads- i wt::fk93 p+n5n b(if vq;j;fgjtxu.z*bl speed of 20.0 m/s in a time of 15.0 s. How far does the car td jz ;vbjnsf5w if*t9ni3-.: t:u;+bgx(f qpkravel during this time?

  94.03: A ball is thrown off a high cliff with no horizontpeoka8 / j1g)o--pohr al velocity. It lands 6.0 s later with a gpo)8oro-/e- hjap 1kvelocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is accel b+pu:ecp;+7fm3/ ztx vcq2wnkk;w)serating vertically upward ae fx tv:s7w; ppk+ w;bcc32u/kz+)qmnt $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling boq4l3r9pswn90nnli r nr1 es +,dy is found to be moving downwards at 27 m/s at one instant. If it continues to fall, one 3lq+lsrp0 n nrn w,i1 er49sn9second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and accelerates at wn:d wj5ut3k 4$0.80\;m/s^2$ 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 dropp ztg1 h(f,fqx(ed from the top of a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of the building is approximzx1(t(gq ff,hately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/s in the upwdahmsl0 l, o2lpu5 l/4ard direction. What i sh2 alo lpml40ud/l5,s the approximate velocity of the object one second later?

  98.14: How long must 8 nfee-s/ srac/se)d6a $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling object is fou 95h, ewb dgxg sk4sha):)t+oxnd to be moving downward at 18 m/s. If it continues to fall, two seconds later the object would be moving with a speed owd)+4, 5h: tghbxs gk 9eo)xasf

  17.02: A small object is released from rest and falls freely for 4.00 7nav*) y.q xtas until reaching the ground. What was the height abov vxtn*yqa7.a )e the ground from which the object was released?

  11.06: A ball of mass =0kw5 ym;bto07 x.100 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 heim75kyw0 ;bxtoght, 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 k+/y wq /bzb1i6-jk o5 fkfq5jthat it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much time does it take q- 6bk/zy jqbkw+ko 515f/ijf the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined px:) hrbjoy21n+p :f cqlane has speed 0.40 m/s two seconds after it begins to slide. Appro+2q jfy)x:p nc bo:hr1ximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m towej(5gnp og*o8yr with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s ljog*op5n8 ( ygater. 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 upwar1f56w (rkcv qbds with twice the initial speed of anot5krbc61w v(qfher, how much higher will it be at its apex?

  02.30: A box falls t*f zcpu.)+u vuo the ground from a delivery truck traveling at 30 m/s. Aftepf.vuz+) u*c ur hitting the road, it slides 45 meters to rest. How long does it take the box to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/s b ir:ks;z.v.z3 zlaszhv( 20e l8r (bunear the surface of the earth. After two secon.shb ra(32uz:.(lbz v;kil8e z0zrs vds 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 zqc9i 4,9qf*v 5jb3sl.cw xlu thrown vertically 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. Assub.scl 4fcu* 99,zj qw5l3vx qime air resistance is negligible.

  10.25: Two point objects are launched straight upward with ide9dbvyp 4c; /cpntical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point.c9p ;dycbv4p / 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 as shown. After each bounce, the z2wd, 2j4abrj*c2: qn+p cno aball reaches one-half the height of the bounce before it. If the ti2rdj*bo2 c:aw qnna p,2cjz4+ me 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 projecti6y a)rjfa*-n zle in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of 6fy zj)nr*-aalaunch from the horizontal?

  05.02: A pebble is dropped from a high :/aecu az0( nzvertical cliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. We /0uza(nac:z ith what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students wereb3-cz03xt u 1)zxxxdo arguing about the height 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 for the ball to fall was 1.4 seconds, approximately how t xb1dx3 x)0tcu-oxz 3zall is the parking garage?

  05.07: A snail is moving along a straight line. Its initial position is x0 = -5gq y3n;p ee0ju3u: :zo meters and it is moving away from the origin and slowing down. In this coordinate sysjpg3u0un:o ;yee:z 3q tem, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled doud6edr9ezjo t8+ +l+gwnwards by gravity (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 led 6+++rjd o9l get8uzoss of energy and that it takes negligible time.

  06.13: A rock is dropped from the top of a tall tower. Half b. 53w.rupfc tho4 ph;a second later another rock, twicu 4pobr53.cw;. htpfhe as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. Tr/q:l6zths. h he cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cah/6zr ts:lh.qrt 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 alc /oyts15e1 h4bi ca2rong a track. The cart comes to rest after traveling 1 m. The experiment is ceocy/b4ha1s2 rti51 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 li 3 ,t+nam1q**osfg) kdjuf9llne with a constant acceleration o golqu,nm+9l13afk s )**fdjtf 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 res: 3t6o xnj bjdhsf/,*it falls without air resistance from a height h above the ground. If the ball fallx3*ns/ 6o: ij,jbftdhs 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 uniforhk8b b 6v,4vbimly 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; 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 6vibv4bh8,b k traveled by Object 1?

  12.26: An object is thrown horizontallyoaaoqf. srmi 31 .rw 3.(lokp+ with speed 10.0 m/s from a height H above the ground. The object r(pa13..w. r+q i ko3asromlofeaches 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 upward. The objectq ()bbgd1yb e.w s-xxb+,9ao.oytvl( 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 functi-ets gy )w ybxbl oba.+q,( .bxovd9(1on of time during its flight?

  14.03: An object is dropped into free fall. Through hslvkw//kb+s3li kf-yh3q* h2 ow many meters does the object fall during the first 3.00 q-svf+3kl*wih kh lbk3 y/2/sseconds of flight?

  15.02: A box uniformly slideerk*xr5 b3ms a3ha 9/jb)*pzov8xp p0s 7.50 m to rest across a flat surface in a time of 12.0 s. What was the initial speed of the box wap*rvo/zp 3*mpbhj8ak0 3x b9sr)e5xhen it started its slide?

  14.07: Starting from evd--ubv9wc3o xzu 44 ; gqym8rest, a cart uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does the cart my-dw 84vecvqgmu;- obzx34u9ove in this time?

  14.16: A toy car initially moves to the righ1 07k wzatgsa7t at 60.0 cm/s. Five seconds later, the car is moving at 40.0 cm/s to the left. The total displaceme7kta7s0 wg za1nt 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 cm/s. Fa9v wqzjuma:,74 m+y i-n-tadive 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 acceleration aa v-tj9iadu:mzm+ w4- ,n yq7of the car during the five second motion?

  14.33: An object moves witpz li32.ro s5;v:hjp20 pp vfnh constant 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 k v ,(g4* k3csaqb2zq9gcrl0efall. Which one of the folgsaqqgz ck9 v32l,r04(e*ck blowing choices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right complc5+*wc6hp5f*+gu gji js+ :lpkypg3; (pqww letes 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 seconds. What constant acceleration must the object have during the 8.0 su( g+ j3l ;+c gpwkp5*+j6 fy*phpsl5wqgcw:ieconds of stage II?

  15.32: An object moving along a line completes a 20.0 second trip with an averagrx+jw 06k9tpd+ vi8fx4 f:u dbe 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 8.0 seconftdi9xd kw r+f p b08x46uj+v:ds of stage 2?

  13.33: At the top of a high cliff, a small rock iytz/ray g8aou ;y.;p1s 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 has fallen 28.0 m further than the initially dropped rock, what is the speed of the ball relty;/1 .o gr8pzy auy;aative to the rock?

  16.36: On a straight road, a selgp2 3 a8wy+p:za l tb* xsx4fjm ml(x8/sci2j(f-driving car races with a robot. The robot accel2/w giy3s4mpx za8lx( +ptmj f :x* 2jca(bls8erates 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 positiol mavmwm:wl 0.x g;v1+n of the ball 0.70 s after release is the same as its vertical position 4.10 s after its releamgxaw+v01:m.l; lw m vse. At what time is the object first at a vertical position that is one-half of the maximum height it obtains during its flight?