94.01: Starting from rest, object 1 falls freely for 4 dy-zjkx97+u m.0 seconds, and object 2 falls my +-d79xjukz freely for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and unifon tmvh ((boz+mqvd;43 u/k)pj*/ tt wcrmly accelerates to a final speed of 20.0 m/s in a time of 15*umnz ( c4vv3w /k+h;t)(m/bq otjdpt.0 s. How far does the car travel during this time?

  94.03: A ball is thrown off a qgv)r y 2iiibp+5wd-)high cliff with no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the in5 )+w)rdqi ivg2 yip-bitial velocity of the ball?

  95.27: A rocket near tpws,1pvfo2(f7 t *hrahe surface of the earth is accelerating vertically upward ap12a*sth fv( f7wrpo,t $10\;m/s^2$. 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 aqqlg4ph*v1 rg mz7tg5ri2m/ 5 t 27 m/s at one instant. If it continues to fall, one second later the object w551lgh/iv r qrzmm472t g*qgpould be moving with a downward velocity closest to:

  95.39: A car starts qc-u)9s8v c*ju5dnie l1r4 eefrom rest 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 to. yh- ;4ntzi9zu douk8p of a building strikes the ground with a speed of 30 m/s. Assume air resy4 u -t9zn.dkuz hi8;oistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0z.29v;vbub k3x tet73lt qc8z m/s in the upward direction. What is the approximate vebqv 9; zlkz3txe .t3cutb 2v78locity of the object one second later?

  98.14: How long must acolt9c/b7 m s7 $2.5\;m/s^2$ 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 t*ru5 raw 18tedownward at 18 m/s. If it continues to fall, two seconds later the objectuat 8e5t rw1r* would be moving with a speed of

  17.02: A small object is released from rest and f+sue .7banyy1alls freely for 4.00 s until reaching the ground. What was the height above ty b +7n1au.yeshe ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched stw7:hhs 5(.yqp sj/ vw 3k8tgpui y0;noraight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. When the ball re8n(sup /t: y7qpvwj hw.o0hg3 i;kys5aches 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 =0.100 kg is layx+wl;;d8orw)k g n0q8 5vsxe unched 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 does5k8x0ngl8qs o;dyww xv)r+e; it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plane has kkq0k k d+vu2/speed 0.40 m/s two seconds after it begins to slide. Approxiduk kk0vk2/q +mately how far does it travel in three seconds?

  98.40: Coin I is thrown upward ff ( omhspt)3ikg2-xsmoc1+ s8rom the top of a 100-m tower with a speed of 15 m23f mix(soch+opms t8g1 -ks )/s. Coin II is dropped (zero initial 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 thro.h -xq oke3-+ r*m1scgfq7fwywn directly upwards with twice the initial speed of another, how much higher will itq+.*fqf mowgkxscr y7 -eh3-1 be at its apex?

  02.30: A box falls to the ground from a delivery truck traveling(- ux 43g k s24;mgythb)hwubf at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take thx4(kbwbsm t- yggu 3f4)2hu ;he box to come to rest?

  03.29: An object is thrown upwards with a velocity of 3g52 9 8tk.k/gs(ojhvto)qwmp0 m/s near the surface of the earth. After two seconds what would be the direo)jt2.kohwpg (s8 /v5 qgm9tkction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) hw*ix-8ad738 vbj adb6w7p lu are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank fbx-j 6a3 audvp8bw 78dw*i7h lrom high to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launchf+7t+6 vh pa; wazj7lbed 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 ma+ ztvj7 fa67 +lphabw;ximum attained height above the launch point in terms of H ?

  04.28: A rubber ball bounces on the ground as shown.,egk5y0ohukr l68tp , After 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 sec, gpe8t5,oyk h ul0k6rond, 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 minimua 0u3.feqs9gb0-n.b trg /vtum speed u bu.bg gtne0aq3vf -0t9 .sr/during flight. If that minimum speed 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 clif4g323mot* nl xhq 9qoxf. The collision of the pebble with the ground below is se* q9g23mx4no3lxhqto en 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 the height of a parking g h4jq6v z6rq;xarage. One studenj6h;x 6qvzrq4 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 initial cwh1; xgslsav vp :v5d537e6qo .dnozy(rs;4position is x0 = -5 m ;(:sedo gyz71xsw.lvnvvorc5qp5 4d ;h3 sa6eters 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/ eyarb- ;s/v+a l8std 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. Assume that in che a-ss a;brlvy/+ 8d/tanging direction that there is no loss of energy and that it takes negligible time.

  06.13: A rock is dropped from the mqp+kfk3 n:r-bq6m.q top of a tall tower. Half a second later another rock, twice as massive as the first, is dropped. Ignoring air r3n6k.bqp:mf-qq m k r+esistance,

  06.18: A cart is initially mo+impo tcwh/w/nr(o(ji- ; shu3oe2 8mving at 0.5 m/s along a track. The cart 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 travel em;uh 8w/wnoj2i t( (3s+omr/- c ohpibefore coming to rest?

  07.11: A cart is initially moving at 0.5 p*1xgx z, l82cyyow7um/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart i 8p7,zux wy1 yl*og2xcs 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 line with a constant +rv:qi h osi64 1ke/qaacceleratio a+ i:oiq rhk/64seq1vn 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 as- c/(-dv.f k evt+ldw height h above the ground. If kcf(t+evl d-vsw/d -. 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 tsk:4ae1 meu6j he 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 euk :4ea6msj1 Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizontally with speed 1giq14j: g e0wcx(b by70.0 m/s from a height H above the ground. The object reaches the ground with a speed of 20.0 m/s. Which one of the following choices best represents the time of the obb1gix0j ycw47(e:qbg ject’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The object remain ql;b/(hy4ez ma+u: pss in free fall until it returns to its initial launch point. Which one of the following graphs cea(/+uh q z4lpybs;:mould represent the velocity of the object as a function of time during its flight?

  14.03: An object is dropped into free fall. Through how many meters doesv lh-5jz 1yv6i,vuq j7 the object fall during -v ,7 yhujq16l vz5jvithe first 3.00 seconds of flight?

  15.02: A box uniformly slides0xyx chxx2rl0 g;e07 g 7.50 m to rest across a flat surface in a time of 12.0 s. xr x2gc000 hey;x gl7xWhat was the initial speed of the box when it started its slide?

  14.07: Starting from rest 2nki -u/fxxnuq 17,ia+ 3nkef, a cart uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Thrn-i/x2x 7ua+k ni f3nqe 1f,ukough what distance does the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five seconds latzbng1 3:xccf/m5+jy1 nt ; tcmer, 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 tc: m byjt 1cn;gm35cf1/z+xn. 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 ini63pch-; *qoiy vf ey8vtially 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 3pq*e -viho8; 6cyvfy 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?

  14.33: An object moves with constant acceleration starting owvao sb4 id18(d y1ce6 xdy:7with 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 one of thtza6o0ppdsju(266v1 -pi wnxe following choices best represents the direction of the object’s acceleration duriawsu (1 pxo6zpptj iv6-n2d06 ng its flight?

  13.26: An object moving only to bogf-; bxgag44 r1y:f)w gtu(the right completes 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 cony :a1gb)wg togbg;4 r4- ffux(stant 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 compa-z yp 4pk8q(u,.mrgmletes a 20.0 second trip with an average speed of 10.0 m/s in two stages. During stage 1, the object moves with pyzag.km rq4m-,( pu8 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 is dropped from rest. A fp4qb6we 4vn x,uuw; lq.l+:pball is la6pw44veun+qw .xu b;pqll ,:funched 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 relative to the rock?

  16.36: On a straight road, a self-drivinujrjp3uc :h8ii*7i vi*w9ct 8 g car races with a robot. The robot accelerate 3twpi7*i8jj:* h c8 cuir9uvis 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 position of the ball 5b/lt e/ hq9kf1sb.ht0.70 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 heighhkeb. t //1b 9hlfsq5tt it obtains during its flight?