94.01: Starting from rest, object 1 fak 91t1qs+1f 5q zxzmg,yr1 di of37zyflls freely for 4.0 seconds, and object 2 falls freelqf17rs9dk+fg,t z1xm1 yyfqoz 3 z1i5y for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a f n26i fjl+*qcbinal speed of 20.0 m/s in a time of 15.0 s. How far does the car travel 2jfib6 q+cnl* during this time?

  94.03: A ball is thrown off a b0f:qq i)k5umi:q ;mphigh cliff with no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial velociui5q qi;b:km:f0 ) mqpty of the ball?

  95.27: A rocket near the surface of the earth is accelerating vertiz(cu249mp(ea; os tyvcally upward otam zev yc2u(ps(49; at $10\;m/s^2$. 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 o- rgk.q d.pyk3p3;mluvvi 62i;l3gh m/s at one instant. If it continues to fall, one second later the object would be moving 33m3g .qy k oi6pk2.v i lpdu;rlgv-h;with a downward velocity closest to:

  95.39: A car starts from- .o t5pyl3k.elkm 8j i:;ozci 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 top of q68o vrvu8xo)wn-d :5 6vmas1ep3 un bp7nps2 a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored e :smadrvuxboonppn v8v2n7w6q8up -65s3 )1. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/s in t -u, nvx3m h+sil8 v6s ;)nyirgu3sws*he upward direction. What is the approximate velonv36uvgnlx r)h3+ 8ss i,; yswmi-s *ucity of the object one second later?

  98.14: How long must a mdan; y p6k:0o$2.5\;m/s^2$ 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 movin kmm6u:lflsvojt- 0 (7g downward at 18 m/s. If it continues to juv: k6s (lfmm 0tl7-ofall, two seconds later the object would be moving with a speed of

  17.02: A small object is released from rest and falls freely fob6k2jeaio*1r*sp ep6(qau 9d r 4.00 s until reaching the ground. What was tse(k2 oeb *6ap1 a *69qujidprhe height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upwa 9vsbfjyaqkc +5:w -aoz,hx+9rd so that it rises to a maximum height of 12.0 m above the launch point. Ignore5bq yjwz f9s+9 aov,ac: h-+xk 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 the ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 kg is launched straigyu le 0szzh6b p8/wo-;ht upward so that it rises to aso-z6 up zb8/0ye;hl w maximum height of 12.0 m above the launch point. Ignore 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 has speed 0.40 m/s two01 butr6e , mp+s5jzgg seconds after it begins to slide. Approximately how far does it tragj0zs m15 ,tuer+6gp bvel in three seconds?

  98.40: Coin I is thrown upway 7lai95 t0 .floayu2.kwl2qd rd from the top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s later. Assume g ouf .0ak2 q2 ylwid57 layl9.tis $10 \; m/s^2$. How far below the top of the tower does coin I pass coin II?

  02.04: If a ball is thrown directly upwa*j 9m7qrilt: frds with twice the initial speed of another, hm jl t7f*:i9qrow much higher will it be at its apex?

  02.30: A box falls t bt.d(bd:dvvvki08 znb 3*t* po the ground from a delivery truck traveling at 30 m/s. After8*.nkdpv: v izbdtd*0bt3b ( v hitting the road, it slides 45 meters to rest. How long does it take the box to come to rest?

  03.29: An object is throzi7)o y55memh u cj*8cwn upwards with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the directio* m m5ccju7i) y58ozhen of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of dk): ,jm7o6mpuq7-vk z*z4 yt,qmqxb vifferent mass (1m, 2m& 3m) are thrown vertically upward with diffkm b up7-qqk6v7,,v :oj 4tx m*)zmzqyerent 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 upwarbp76hy)c0es un 1 4hzpd with identical linear momentum. Object 1 has mass M and reaches a maz6c bu0sh)y 1p 4h7enpximum height H above the launch point. If object 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 thjdj h t--e- o(v12djdve ground as shown. 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 second, what would be the time between th(vj2d e t1-vjd h-do-je second and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fall achievmn s54s3 : joqgulq/tt9t-hy9ed its minimum speed d q/t olss9: tu 9q53tyhm4gnj-uring 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 cliff. The colwk;:v7 aksj9nko .kd5lision of the pebble with the ground below is seen 1.50 seconds after the pebble oa9wjkksk7k .v 5;:nd is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were a- kscmm wq(.wvm./eb0rguing 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 tennis balls. If the time for the ball to fall was 1.4 second -..m(qeb0vm/ mwkwscs, approximately how tall is the parking garage?

  05.07: A snail is moving along a straight line. Its initic;e- j( ;51a ugtt0e+.uo0vggkewzea al position is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system, theou5 twuveg (0;cj.etag0z e ;1-eakg + signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object ixvh3, cdxj52 ts drklfi6n1.0rc2u(n s pulled downwards by gravity (down the plane of the page) but is constrain. r3cntf(uj2 xrx6 lv1iskcndd2,h0 5ed 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 negligible time.

  06.13: A rock is dropped from the top of a tall tower. Half a, njd5md, /a p)ue2w1etq.f4hdqx; mu second later another rock, twice as massive as the first, is droppede dd)jf nm 2,t.w 1q,qm4 5uadx;ue/ph. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along qe(ef4ugs3t/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 beft (gu34e/ eqsfore coming to rest?

  07.11: A cart is initially moving at 0.5 m/yp7c:ukw5;fle /yt 2s, vuw vt9l9cy*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 atttyc2979vfs5wy* pl:v uk ,e uc/ lyw; 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 acce 89cb3:dxgvtrlerr cv98x td3bg:ation 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 fa)dobvl j --0iay 6u:-kl owjo*lls 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 requiredjilv-ul)y-do0b wo a* j6o- :k to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly abic/oqkg. l34 ccelerate to the right. At time t=0,the objects are at the same initg .ql3 kb/cio4ial 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 thrown hk+wgc;m . na3ybhjd /,orizontally with speed 10.0 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 object’s flight to the grk,+ybcag /jn m3h wd.;ound? Ignore air resistance.

  13.10: An object is thrown straight upward. The object remains in free fall 8ebfkyq96. yg kbq /-buntil it returns to its initial launch point. Which one of the following graphy/gbfk -6ey q8k9.b bqs could represent the velocity of the object as a function of time during its flight?

  14.03: An object is dropped into free fall. Through howqvog :a kc-x5dh-. xx( many meters does the object fall during the first 3.00 seconds of fli . xho5-v x-cqa:k(xgdght?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface in a timeg6h1 ; zmg)d g56 9pwb5nylya3nka5j d of 12.0 s. What was the initial speed of the box when it s1l6)5dha yd g;nkggz63 9apmybj55n wtarted its slide?

  14.07: Starting from rest, a cart uniformly ac7 g9fnp7*lnix celerates to a speed of 7.60 m/s in a time of 3.00 s. Thx l7 npn9gfi*7rough what distance does the cart move in this time?

  14.16: A toy car initially 93.(jw(dxcfr9igew i, 5z(ugxf l( zpmoves 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 ,(zpf fdu3lx9e5c(jz x ig igr(.(ww9 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 arxkpjz :an7: d2u;fu sxvo)49t 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 sv94nxf) z u u7:jod2:rapkx ;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 with veldk qi/a8 g0:e gu-w i5dyhm0c8ocity $v_0 = 5.00\;m/s$ 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 onecwj-yk/q 29tp of the following choices best reprec qyp- jk/92wtsents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the rte1 5ft m*e:*vutbwu.ight 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 constant velocity of 6.0 m/s for 12.0 seconds. What constant acceleration mufe u.v*ut m wt5t*1:ebst the object have during the 8.0 seconds of stage II?

  15.32: An object moving along a line completes04; ffgqzy jt3 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 magnitude acceleration directed to the left must the object have durq 0 ;4fty3gfzjing the 8.0 seconds of stage 2?

  13.33: At the top of a high cliff, a small rok(wc8 f8;pr 1dgj)+ fgxwfn+mck is dropped from rest. A ball is launched straight downward wi8 fgmg;)+wpfk8wjxrn fcd+ 1(th 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-driving car /e 6rgb6-/w g z xvwy(.*)v*jntbrnowraces with a robot. The robot acce xww*jv-z tn6e/( bng*rwb/ yr)go6.vlerates 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 vertu,5is,a(es0nz n: lxbical 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 s,x5enbu sa :l, 0iz(nthe object first at a vertical position that is one-half of the maximum height it obtains during its flight?