94.01: Starting from resj/wqpqx8 m)z3 t, object 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Comq3m/zj)xp w q8pared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly v,k hps :rbb- 7dlwp5f4 a5t+y7rvz:zaccelerates to a final speed of 20.0 m/s in a time of 1575:ba-5ps7v+fzd:h t 4, rvwrlzpybk.0 s. How far does the car travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal d6esb 5kf 6in.velocity. It lands 6.0 s later witsnki65 6b fed.h a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is ac64pytdmyh 38 mcelerating vertically upward amtm hpy38 yd46t $10\;m/s^2$. 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 in iro*u2dx7 s0up 9b. qca*n,hkstant. If it continues 9q7hrsni bd.uxp*kuc* 0 2,aoto fall, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rz1/ /7 55lbr f,a bmgkg*did8twd8ugtest 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 from3w(sgj*8fgx1:og f r s 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 i *3fggrj1o:8s( fsxwgs approximately:

  97.09: At a certain time, an object in free fall has vel8wgi5(7l v g;3bkkvc i6lf)toocity 4.0 m/s in the upward direction. What is the app 63g vkfbvwt(ll5goi)7 k;c 8iroximate velocity of the object one second later?

  98.14: How long must j x3lf4qj aiz-6 v:hy+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. Ivm bq z rnvtp9lq9sn(x41h.o2, biq41f it continues to fall, two seconds later the objelvqxz9r4, 2.tpn 1bo 1(94ivhbsm nqqct would be moving with a speed of

  17.02: A small object is releg7tr*mhyk zge )z) (3gased from rest and falls freely for 4.00 s until reagg kehg)r zz 3my*t7()ching the ground. What was the height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched s4.+o nzht8;qq 6 f2 kkio+dqzwtraight 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 height, which one of the followingfz +kwqk.6 8+q;tn z2oihoqd4 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 strai/zb 0bo pgk(9nyt fp)u: b2fv7ght upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much time does it take the balo79 vt)(:np2 /bbfzpkf 0 ugbyl to reach the maximum height from its launch?

  98.31: An object sliding down an incl7;sjenfc 2h5 yined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does it travel in three seconds?c75j shefn;2 y

  98.40: Coin I is thrown upward from the top of a 100-;zj yl,s.iw2 jno-+szwb i;6v uv 7u2s8hq(h om tower with a speed of 15 m/s. Coin II is dropped (zero iniy( jujwos8. -; +2 hw7s;zv6 2zb,oqlisvnhiutial 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 thrown directly upwa6oio 4z c1bsh z+8sa*hrds with twice the initial speed of another, how much high4i z6hzcsb8+ha*s o1o er will it be at its apex?

  02.30: A box falls to the ground from a delivery truck traveling at 30 m/s. Aft5ilf**m(qb nmer hitting t5l*n( qb mif*mhe road, it slides 45 meters to rest. How long does it take the box to come to rest?

  03.29: An object is ,znp mfm,+2atf( ,f dqthrown upwards with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, velocity and acqmtf+ ,f2(d ,panmfz, celeration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vertically upward:dj7* m* ea vucd (yey8b7/zlx with different velocities bc(x d*/ymav7j ly*ud :eez87(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 identical yi) 82h7rs c jkp+a:fglinear 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 attaine8)hpyf :+kgi2 jsc7r ad height above the launch point in terms of H ?

  04.28: A rubber ball bounces on the ground as shown. After each boux e ,9 )xbz;cb(wp m,8dzs;fyfnce, 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 woulz,w (z yxf9,dc8fe;)pb;xs bmd be the time between the second and third bounce?

  16.21: At 1.94 s after wh/c.n1v-zfabctg7t/mttn ;3 ni-) ylaunch, a projectile in free fall achieved its minimum speed during flight. If that minimum speed fwn;bv /c1z t-thty. 7a-t)mninc3g / 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 thqt4 .hpmgig2 7dmn//ge pebble with the ground below is sm4 g /p2mngit.7d g/hqeen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about ther5fzgl8bjr h87 wh4hix 2e (+t height of a parking garage. One student suggested that to determine the height of the garage b ej wh(h7r ltrz8524x+fig8h, 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 straighpm(( v7lgvjz5v.yl2u t line. Its initial position is x0 = -5 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, respectgv2j lpml y(z5.(7uv vively, are

  04.38: A small point-like object is pulled downwards by gravity (down ty1o wm ddlz,t8s, v9gyb)pp.g e*h2s6he 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 yv.*l yd z6gwg 8p1p, 9tb2 moehsd)s,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. Half5 w)tke8xxv60 a2goks a second later another ro6 kx 5xvo28)tsg0 ewkack, twice as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0g*ii0 jp:jo0 ,m+p5i3j3w0bwzbfe bz .5 m/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the b0z3gim:jp0bp f05eww3b+j, izj io*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 cahil-, f00v mvert comes to rest after traveling 1 m. The experiment is repeated on the same trac,-lh v v0mife0k, 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 av1 log)smh: * l2xx,uwk)+ pcbnd runs in a straight line with a constant acceleration of 2u) wk)ogxvlcbhs*:12x l+ ,mp $.5\;m/s^2$. How much time does it take for the dog to run a distance of $10\;m$?

  10.29: A ball initially at w mt6dv0xx( ib( t+ll5+xm3vv rest falls without air resistance from a height h above the ground. If the ball falls the first distance 0.5h in a time t, how muv3xxxd(w(t6 +m 5+tllmv i0bvch time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accele i2mjp:jeey /tz+ cr0fj0 ,y,;e; zloerate 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 imlz;ce /ej:; ,z0 rp2+e,jyeiyt0oj fs 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 a height H 0g8jtp ob wwg4 46djt0c-qw9yabove the ground. The object reaches the ground with a speed of 20.0 m/s. W08g6jwqt0494pwb c g-dwo tyjhich 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 object*)c jy,w-ys4+ tjyodb remains in free fall until it returns to its initial launch point. Which one of the following graphs could representd)4s +byj *w,yj-tcoy the velocity of the object as a function of time during its flight?

  14.03: An object is dropped into free fall. Through how 1 on7/v .gq3sid5o3vvv l0gmb many meters does the object fall during the first 3.00 seconds of fl7gvb0 giovn3ldv/q5 o31v. smight?

  15.02: A box uniformly slides 7.50 m to rest acrossmsriv7 oys b0f h;2e5o4qh): a a flat surface in a time of 12.0 s. What was t ar4s:e; omihfs5bov y7q)h2 0he initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates tociul/m 1v/6g m a speed of 7.60 m/s in a time of 3.00 s. Through what disclg6/ ummi1v /tance does the cart move in this time?

  14.16: A toy car initially mfmg+u htkfv66gkfkm7 q8/ -p.oves 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 6f.-vghfupfqk7+kg t/8m6mk 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 initiallo0) w(a qayh hdnatzc6u4+36f y 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 dh6nz t(uy36+owc4afhaq0 ) a 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 wilzepc /oljatzbn5z8 6 ,s *. 3*mqs8ftth 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 initiallyu2/srecf n *0oetw.g5 is moving upward while in free fall. Which one of the following choig we*.t0curoe/2 n s5fces best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes mz dzsq) p/(v2a 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)sz vq(2 d/mzp 12.0 seconds. What constant acceleration must the object have during the 8.0 seconds of stage II?

  15.32: An object movinglpx2i(/2smb k along a line completes a 20.0 second trip with an average speed of 10.0 m/s ki2p/lx (sb2 min 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 seconds of stage 2?

  13.33: At the top of a high cliff, a small rock isyr/k o2)q-k n+u5if+ o mdrnc+a/ 1csx 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 droppe+ soc/ n/1nc- xk d 5miuf)orrkqya2++d 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 robot hj bw.l3 v7tz+accelerates l7 bz3w.+hvtjat $8.50\;m/s^2$ 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 vevm61rm9fy lh101deg k rtically upward. The vertical position of the ball 0.70 s after release is10fm96vygm dl1 rhke1 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 its flight?