94.01: Starting from rest, object 1 falls freely for : :1bo y; atkh/e yl/4vmkzu5s4.0 seconds, and object 2 falls freely for 8.0 seconds./m yslz4;a kb5y:tue1:vk o h/ Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final sb ::9nh hp,bszbf,x6/ngq1 ydpeed of 20.0 m/s in a time of 15.0 s. How far does tbghdnxphyqn, :,sbf9/ : b16zhe car travel during this time?

  94.03: A ball is thrown off a high c;k yj: r zdjc-w(tnv.q-7/zmjliff with no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial velocityyj t-/c- :jr( nd;zz.vjw7 qmk of the ball?

  95.27: A rocket near the surface of thx q:u 8d(qt7n2twhqnxu:j ;g9e earth is accelerating vertically upward at :qj7 w tuxhg9 qx;:n 8dutqn2($10\;m/s^2$. 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 n5yrl102x hcm0v vak .+nrdp1stant. If it continues to fall, one second later the +pra0.xr 12dc yn5lm1vk0 hvn object would be moving with a downward velocity closest to:

  95.39: A car starts from rest 53t2bojvfdexd2: b/qr3 kug2wy x9a -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 from the top of a chcph7;p9+ l1lv c ow)building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The 9c+h hvwclc;l p1)7o pheight of the building is approximately:

  97.09: At a certain timv2:72ds hqgq j2jaz aj* ur5.fe, an object in free fall has velocity 4.0 m/s in the upward direction. What is the approximateajzjfjvgur: *qh 7sd22.a 2q5 velocity of the object one second later?

  98.14: How long must awticx5g2 13 rd $2.5\;m/s^2$ 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.kzw6 xzv*e0j ao n,)e to be moving downward at 18 m/s. If it continueo,k zev w.j*)z0e6 nxas to fall, two seconds later the object would be moving with a speed of

  17.02: A small object is released from rest and falls freely for 4.00 s until; j(/4 wqmzanl reaching the ground. What was the hen zq w;(jma4/light above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so that it rwym(wp ;pty* b0;kdb 7ises 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 following choices best represents the magnt ;*w0;k7 bd(y bpywmpitude of the net force acting on the ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 vy(z6- bk ecu(arn(jsxwy;-,kg is launched straight 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 ixb((y;, (r aen6 ws-z ycjvu-kt take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plane has sud(s,u8 f uie 54ac 4 y4va;b*tolfo3opeed 0.40 m/s two seconds after it by5 ecoao4ft(4ui 4oub*d3la, 8vuf s ;egins to slide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upsw5z ;ol/ tn tz/m 2)g+*tnpzirklx48ward from the top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero ini /;lmtgxlo+ t8p/4krnzwsitn5) z*2ztial 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 upwards with4 pd/nnj( 1bf5z:mxeur pec(. twice the initial speed of another, how much higher will itpe: 4cfezj5x /pdbnrn1 mu((. be at its apex?

  02.30: A box falls to the ground fromi+7abggk1u m-l40wk gl: b- wm a delivery truck traveling at 30 m/s. After hitting the road, m--+ukag 4lb g7g0kiwb wl1:mit slides 45 meters to rest. How long does it take the box to come to rest?

  03.29: An object is ni9 mf.pi7 of*thrown upwards with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the.iif9m on* p7f direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 31i 1x*sz emiywk84ir1+buj*r4;pot jm) are thrown vertically upward with+r 4j1iyiz14bou ; iepmx*1tsk* w8jr 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 launch tqdo,(7ej6wx/ yfyn2ed 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 above t ,2on qw tjey/fd(76xyhe launch point in terms of H ?

  04.28: A rubber ball bounuo*hj /)o7xuz ces on the ground as shown. After each bounce, the ball reaches one-half the height of the bounce before it. If oz/hux) jo7*uthe time 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 projectile in free fall achieved its minimum jld00nwjah hq9wx 4q3h-c43 cspeed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle ohj90 dwjh44x3acq-cwlnq 30 hf launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cb2cynx6 z2+c w,ji0mfliff. The collision of the pebble with the grounc2i j nwmzf20bcyx6+, d below is seen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students *l ix/(k ubtxo k+i+29fsanu(6*c a(zfmndy -were 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 te(fsykx *k (i6b9lx u/t(2+odza*nnaufm +- cinnis 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 m.s5(;z nmydoh q0cs 0along a straight line. Its initial position is x0 = -5 meter5;zqmmhy0s o0 .d(cs ns 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, respectively, are

  04.38: A small point-like object is pulled downwards by gravity (se.l(c db41ukrl3 vzl ajeh8 2-yyq6(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 re 6us32ez-ly4(aj lvqdyrlkh b ec8.(1st 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 a second later zso;74)xmxy up- :pnah0mo53 ib /gee another/;ep xe o-p xsmna0):57 ygmibz 43huo rock, twice 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. The cart c1.bb5 *slzdkyomes 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 trb.y5z ls* 1kbdavel before coming to rest?

  07.11: A cart is initially moving at 0.5 m/s along a-v;km ,,t 5w3lo1d3(a e dcwwwy ez1gw track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is initially movic15m,eel1g ww,;33tzyowwda( d-vk wng 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 cons9 tg -(eb pbpq4+. nkhdki4n;dtant accele; (bdgkek4 nhptn+ q9i-.pb4d ration 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 amqy5cw8:kj.m7amuz/i8 b bg, t 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 much time is required to fall t b .:wimy,ga5c/8kmu7 qzm 8jbhe remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelera-* orlpq. map5te 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 1pp5- ar*mq.l o 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 h6nmq+0ga y4omorizontally with speed 10.0 m/s from a height H above the ground. The object reaches the ground with a spm6aq0omn+y 4 geed 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 u wi8ret mh1.a+pward. 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 function of time during its flii+.8mwa1 t herght?

  14.03: An object is dropped int z.+ik8ej 0vwio free fall. Through how many meters does the object fall during 0wij+ez.8iv kthe first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m tt2gk 0oiml8:274shl r.xm7ois r 3vzuo rest across a flat surface in a time of 12.0 s. What was the initial speed of the box when it started its slirzovls8r .l0kg: 24u3 m x7hiti2mos7de?

  14.07: Starting from rest, a cart uniformly ac9/r t3zo z8an(hlh6ojyrmv4 . celerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does the cart move6l(3zh tjoynv. mr9ha8o rz/ 4 in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. F: (z0o2 hm y5jvsnkxe;ive seconds later, the car is moving at 40.0 cm/s to the left. The t25o ; :mve(yjszk0nxhotal 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 velocity of the car during the five second motion?

  14.17: A toy car initially moves to the right at 60.0 cm/shc 7)js ss+8sd. 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 acceleration of the car during the five second motion?s)h 8 dss+s7jc

  14.33: An object moves with constant acceleration starting with vmhgbi)ra3krmva 0( j;1bx.v( elocity $v_0 = 5.00\;m/s$ 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. cdik*yoq ,/0lpg5(7rjl l p8h Which one of the following choicesk5rl/jq(lp ohl,py 0ig 8c7d* best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 sec 1;4 w9)kmy ca:aflripond trip in two stages, I and II. The average speed of the entire trip is ly 9ar kaf:i 4p1)cmw;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 along/bf4qoy1e v cz* ir2u7 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 velocity of 6.0 m/s to the right qvc2i7z/fy4uro eb1 *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 is dropped from rest. A ba/pgaxp -;z+g2x e/3 ug (trmzmw q68tpll is launched straight downward with an initial speed of 36 m/s at a time 2.10 s after the rockg6qp x+(trxe g /2/w upzp mg-38;ztam 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 ra nc6zbexjj/)io 82 /ieces with a robot. The robot accelerbeix8z/jcn2i6oej )/ ates 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;5xuna 0sg snia5n( )i vertical position of the ball 0.70 s after release is the same as its vertical positioi(xu;0 nng n5as5asi)n 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?