94.01: Starting from rest, object 1 falls freel+hincyx-yz bggx;7)( (mmyrr5 hb u1/y for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1,xhb zrbi5 gy g1cnh/xm-(+(r )y;7yum object 2 falls:

  94.02: A car starts from rest an5uahi5oik* 4zlgj r;6d uniformly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How fa irk6uj4lo; ha5z5 *gir does the car travel during this time?

  94.03: A ball is thrown off a high cliff with nog/ q- rhznma3kah64d2 horizontal velocity. It lands 6. hza6qm - 3r4an2k/dhg0 s later with a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth og, wrav(x0 2 5y(.)elrctrncis accelerating vertically upward at yornc w(cetra,( x 5g). v0lr2$10\;m/s^2$. 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 at one;f0db;+qow- pl+y gha instant. If it continues to fall, one second later the objec+y+;ldb; of 0aq -wphgt would be moving with a downward velocity closest to:

  95.39: A car starts from rest and;4nchgn epn4v+ydl(0 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 wity8xx;kn-k,39yrn4t is sb -xth a speed of 30 m/s. Assume air resistance can be 4xky8y-t9s n;-s , tixbk rn3xignored. The height of the building is approximately:

  97.09: At a certain time880wk2 t zwy/ggrh,hy, an object in free fall has velocity 4.0 m/s in the upward direction.8hg8 y 20whrgw,kt /zy What is the approximate velocity of the object one second later?

  98.14: How long must au j/t 0yg8msd rq3)jc w0w1c;h $2.5\;m/s^2$ 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 z-g;:oetw3, vi l7n oxm/s. If it continues to fall, two seconds later the object would be movingnilw-g tz x;e:o7 v3o, with a speed of

  17.02: A small object is released from rest and xxwtxo(.n)7-p2ysh c-) jl; c;dpr szfalls freely for 4.00 s until reaching the ground. What was the height above the ground from 7 wzp(;j2)ssx ;)-n .coyxc rt hxd-plwhich the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so that it rises tk jw ag(v-ge1+5 +q)pz lxg3xgo a maximum height of 12.0 m above the launch point. Ignore air resistance. When the balk-z vgglj )x(+5+1x epgg3awql 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 =0.1qoj3-kl*ibv( 00 kg is launched straight upward so that it rises to a maximum height of 12.0 m above the launch point. Iikq ljv(3*b-ognore 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 ha;lamuq.( p2mqs speed 0.40 m/s two seconds after it begins to slide. Approximatelya ulq.2(;pq mm how far does it travel in three seconds?

  98.40: Coin I is thrown upward froruqt7 9pbo h 7vm3a;z3y6s(6 e8jetlmm the top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from t6qtms87; zr7e o hey(lmtu96 pa j3bv3he 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 twice the initial b0u-2sb;elk o *p7cojspeed of another, how much higher will it be at its a*c0kous; l 72bjpob-e pex?

  02.30: A box falls to the ground from a delivery t lprn;uacm8 53h-kz.e ruck traveling at 30 m/s. After hitting the road, it slides 45 m;aprmzhk e u-53l.cn 8eters to rest. How long does it take the box to come to rest?

  03.29: An object is thrown upwards with a vzh2 v qt7l;9u0xuavo3zb09uj elocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the disp qhv70a0ul vj9u9z; xzt 23buolacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) k97(onnmt nr /8q:bjt:)sxko are thrown vertically upward with mn)rtn kk 9/sx8 7j:tnb(:qoo 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. Assume air resistance is negligible.

  10.25: Two point objects are launched straight upward with ib i,/*j-;eb jyq s-wjzdentical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If objec--jijzb,eqb/sy jw;* t 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 boun0cmn2:nh /x, zapr 33o0ff krmce, the ball reaches one-half the height of the bounce before it. If the time the ball waakf mcp ,00/:m2 ro3nhxrnzf3s 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 o0fn tmga 8gnjdta)*c/ wiav apu+ y411s:-*flaunch, a projectile in free fall achieved its minimum speed during flight. If that minimum sp af agt*+im1asd1tow )0yg*pnn8 jc/4 v- fua:eed was 15.0 m/s, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropph2dgtq1 egr03w2uss(ed from a high vertical cliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resi1uw0 srt2(g gesh32q dstance.

  06.03: Three students were arguing about the height of a parking gara8k vqg3ibdbl *r:ymj,v ra8..ge. One student suggested that to determine the height of the garage, they simply had to drop tennis balls from thq, m8b3bgr aid* lv rvk.:y.j8e 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 strai rwbq p:j(128ikzq zv+ght line. Its initial position is x0 = -5 meters and it is moving aw q81bjv2ikzpzqw :(+ ray from the 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 gravity fh5h8c/q9 y1vp4 gych(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 loss of energy and that it takes negligiblcy1qc9p hhf54 ygh8/ve time.

  06.13: A rock is dropped from the top of a u bvxvcs46i28tall tower. Half a second later another rock, twice as massi6s bv42 iuvxc8ve as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The cart clvba ,eum9 /,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 trav,c, v9l /bmaueel before coming to rest?

  07.11: A cart is initially moving at 0.5 m/s along a track. The cart 73wg ,ol)r2p iqlk 3mecomes to rest after traveling 1 m.olqgm3 7wk)3 ,p2er li 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 fromx ;k0rk n xnugh4 ce -) of6v(ljazfq,53mfd2* rest and runs in a straight line with a constant accelerat2;,x 6k-rch dek( ozl*4vnfna3)fq u0xf5m gjion 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 height h aboceckj x cz 4lhzcv+; d:iw9otg-,:n*v-er6e9 ve ti;c o9v-:lce9 4t,z+ jn-e c6rgxwdcv*e:z h khe 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. At tibyy9 7 yzv .z-9g.lvt u0l:k f;wpesv2me 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 r:7y ;-gybfkv.pl90ul9e vyt vw.z2zsatio of the distance traveled in this time T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizon( v ( + zmcgvzs;n/*itree)/mxtally with speed 10.0 m/s from a height H above the ground. The object reaches the ground with a r/c ;( s zx iten+(vgzm*m/)evspeed 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 str 4ua 1 yecl36 :v2tgez,ccj*ajaight upward. The object remains in free fall until it returns to its icte*yaecl j:3g1c,42ajzv 6unitial 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 free fall. Th.kgeb02di *g hrough how many meters does the object fegdhi .0*k b2gall during the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to resllie,3hyqg bv/ n):/y4xft ,b t across a flat surface in a time of 12.0 s. What was the initial speed of the box when it started itilg:e 4tq) 3/fynbvhylx, b/,s slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 7.60 m/sbv kh k2rowou(g39(6 ayf1 :nc in a time of 3.g16w o9 kuoy cf 32r(vak(b:nh00 s. Through what distance does the cart move in this time?

  14.16: A toy car initifluxk;f*kxb,cww/b;u ) e n 15ally 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 startec/;x1kfnf)5 ; kuw ,xblw *beud. 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 m th +n(.zz:.5b nkz5oksj kj/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 cjnsbz5 hz:o .kk/n+k5.mzjt( m 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 (2 zjftgdc(x- fy4p,xconstant 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 fall. W,b6;k( zoh,r(xis mf;7dg/z os +vffshich one of the following choices best represents the direction sdb;,xgk;67s f(o zs(v/r +f ihozf ,mof the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 se4wsf0 kj0i8oqdd m x54cond 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 m85qk w40i mfo djd40xs/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 cz7*p.y: r6v. dld bslkompletes 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 velocity of 6.0 m/s to the right for 12.0 seconds. What constant magnl d .rpb .dzksv*yl:76itude acceleration directed to the left must the object have during the 8.0 seconds of stage 2?

  13.33: At the top of a ax5ip q--im7i high cliff, a small rock 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 droppamixq -p- 75iied. 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 r3o e-efak7b,*x7u wpbaces with a robot. The robot accelerates atwe,3 u7a- fxbep*7kb o $8.50\;m/s^2$ 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 vertica66sf3nc g1c n(et h2mgl position 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(s 2fnhm6ncg1g6 3e tc its flight?