94.01: Starting from rest, object 1 falls freely for 4.0 secondh6i2/.)irdytby:c )cdokn6cx:pi 8 d4 t 3t sds, and object 2 falls freely for 8.0 seconds. Compared to ob b)4. td cidyt)xyp/oih it:3nd68sr6k: d 2ccject 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final speed 1p 8cgktwf ;v(q: 1vwiof 20.0 m/s in a time of 15.0 s. How far does the car travel during this ticvftw1qpi8g1 w:k(;v me?

  94.03: A ball is thrown off a high cliff with no horizontalrevn. n.3 dc-n velocity. It lands 6.0 vr3nec-n d n..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 f g .5qzao*.rslrl;g1the earth is accelerating vertically upward at 1a *l5r;fg.z rslq g.o$10\;m/s^2$. 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 on khr)o9li eqs)f+g5*n e instant. If it continues to fall, one second later the object 5lroqhi*sng) )fk+ 9e would be moving with a downward velocity closest to:

  95.39: A car starts from rest and accelerates ahowb:i+ it/e. t $0.80\;m/s^2$ 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 wi;: /6gkywb6*rp qqepg3 p 6jnith a speed of 30 m/s. Assume air resistance can be ignored. The height of the p ;gprn6qk3y q6i/eg*: jp6wbbuilding is approximately:

  97.09: At a certain time, a )y,zggnzfq 1(n object in free fall has velocity 4.0 m/s in the upward direction. What is the approximate,gfz 1q(gzyn) velocity of the object one second later?

  98.14: How long muste;9st6:5 lkhdnkfz uem /ccmxn;se6k.33a 8 q 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 *o0v:mlbvd p;b 5i.ijobject is found to be moving downward at 18 m/s. If it continues to fall, two seconds l oj:vpi0bm;5dl i*bv.ater the object would be moving with a speed of

  17.02: A small object is released from rest andrr:4 2zs5gftx+b k lg+ falls freely for 4.00 s until re+: 5rgrx2t4 kb+ zfsglaching 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 straight upward so that it 5eprb t ilc-bor2-;, erises 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 magnitude of the net force acting on th-p;r cb 5-lb ,2rioetee ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 kg is launched straight upward so that it r8mt 5 p ks4i;1yy;eezhises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much time does it take the pky s t;85h; 4yiee1mzball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plane has speed 0.40 m/s twopvo 1b0; kst6 *l5idar seconds after it begins to sli ; tdlo5rbvas* 106pikde. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the tt)jla ktqnvy.9 4v,p 2op of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the t 2tytnp vak,9j).l4vq ower 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 speed of anwj 96)kooblfe+ jg(8 wother, how much 6bgoojw9+kjf( e8)lw higher will it be at its apex?

  02.30: A box falls to the ground from a delivery truck traveling at - l4v62jyqvu9b cth5h30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box to coc9uyvh2t h-j465vbq l me to rest?

  03.29: An object is thrown ozxs1 in/ w79eupwards with a velocity of 30 m/s near the surface of the 1 o7i9xwne/sz earth. After two seconds 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 thrown vert*v1j ay o l,a,cxsxo7k98jya4ically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank from high to ,o x 1a j8*lsc9 yy,kaj4ao7vxlow the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight upward with identical linear mhky c;t mjjr28swxf7 /s+l *gwjs)+ pqe g83;oomentum. Object 1 has mass M and reaches a maximum height H above the launch point. If object 2 has mass 2M, wh8y jg2g q*w3x jsoj;;f rssmpl8 kt/)7eh+wc+ at is its maximum attained height above the launch point in terms of H ?

  04.28: A rubber ball bounces on the ground as shown. Aftvfpgn i,0 -u7p sqoh+(arq) +ier 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 would be the time betweq r (-ifivq)s70o+pa gu,+ phnen the second and third bounce?

  16.21: At 1.94 s after lag j.i506hsp3mye a*kbs fnu:.unch, a projectile in free fall achieved its minimum speed during flight. If that minimum speed was 15a6:gm.3fni kusb 05e.hj psy* .0 m/s, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropp w/ cewcpnx8px/ub(q;z 1,2em 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. Wit,pzm8e1n(wcb/ 2p ucxwe;/qx h what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a ,umyv /rf0.*rvm w(ypparking garage. One studen.y ,fw pvryurmmv(0*/t 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 tall is the parking garage?

  05.07: A snail is moving along a straight line. Its inim;0w0w h,cu tutial position is x0 = -5 meters and it is movih 0;w0t,ucwumng 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-li d+v0hp8uda if;du .:;y o1cmxke object is pulled downwards 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. m udd f1a ;cdpy +8xi;o.vhu:0Assume that in changing direction that there is no loss of energy and that it takes negligible time.

  06.13: A rock is droole81tt6jhm h - -vu*dpped from the top of a tall tower. Half a second later another rock, twice as massive as t8d1o*h-jvtmh -eu tl6 he first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The cart.yf cebg3 8ar/0j6hqhy* dij* comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is initially moving athhg d/3yy.8frqijj0b 6 a*e*c 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 cart q(fsg09)fj bk comes to rest after traveling 1 m. The experiment is repeated on the same track k9fg0sq()bjf , 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 swj9l5 t5 jg+b--aqwsnulg e/3 traight line with a constant acceleration of tlg qen-5/jwsl b 3j -u5+wag92$.5\;m/s^2$. 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 ujp qum.d25i+j 7q12cy9h -x( dmfaaoheight 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 distance25ui7-j p uyf+m1 .q(h9d jxd amqao2c of 0.5h?

  10.38: Two objects both move and uniformly accelerate to the right. At time tn 0o bknn8t(l6oxp6j/r e:9 qb8 skc*v=0,the objects are at the k 09svqp6b /r*nnot jcob8ke:(86x nlsame 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 traveled by Object 1?

  12.26: An object is thro hyuod(z ;tj8zmgw0,.wn horizontally with speed 10.0 m/s from a height H above the ground. The object reaches the ground with a speed of 20;o,8t(z u. j0 dhymgzw.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 thro,9uf r,x ds18d 9lg ;xu;hlfxgwn straight upward. 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 i ,x l f1,lgdhur;9xfg;89dsx uts flight?

  14.03: An object is dropped into free fall. T h lr,3oo6dl.qhrough how many meters does the object faldr,qo loh6l3 .l during the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface in al i0cj-h-afrt x12 p7x*vja0k time of 12.0 s. What was the initial speec x* -p70r1ajf0 vk2axljt-hi d of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 71-e 29/bbtgve0* tdz*cje l vf.60 m/s in a time of 3.021c e0-/bel9tbfvtgv*zdej *0 s. Through what distance does the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm 79tr1yc 9xoyngwre(;piyf- 9/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 folr9ywf(t p nc19yoy9gerx7-; ilowing 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. Five sn pa riw77 (97pwjdht+econds 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 fivep ww97dhran+(pit j77 second motion?

  14.33: An object mov* v. k9n1cqqn.;kswijzhw g 4(es with 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 fall. Which onqa xg)-eipcri8 ( - ih0zeos-*e of the following choices bes(i* csq-ie)ea xhgop i -z0r8-t represents the direction of the object’s acceleration during its flight?

  13.26: An object moving on:dj8ofgrv h)3 ly to the right completes a 20.0 second trip in two stages, I and II. The average speed of the entire trip is 1groj)v f:3dh80.0 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 a line complf1 p; rz7ch0n(qgp8ncetes 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 6qc pc;7g (h1n0zrpn8f.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 cliffikz*0 ma4x w, o-nxqa3n+adj5, 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 dropped. When the ball has fallen 28.0 m further than the initially dropped rock, what a +mdn4xj3kw q*0,o-a5n a zixis the speed of the ball relative to the rock?

  16.36: On a straight road, a self-driving car races with a robo /y,sawe z1)ynt. The robot accelerates e) /ya1,zns ywat $8.50\;m/s^2$ 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 hkm7afm /l +3ojn,(li upward. The vertical 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 its flightl( oa+f /hi,jmlmn 73k?