94.01: Starting from rest, object 1 falls freely for (ldul3 qi7jg 6k8 zf9d4.0 seconds, and object 2 falls freely for 8.0 sec 8f7 u639k(jllddzi qgonds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a 5wbfx/mg ptj ;t r 501hfnn4;wfinal speed of 20.0 m/s in a time of 15.0 s. How far does the car travel during this ti rwn0g w1 hp;5 f5/xmtjntb;4fme?

  94.03: A ball is thrown off a high cliff with no horizontal d) dfrn.l7/z dl.i k:jvelocity. It lands 6.0 s later with a velocity of 40 m/s.dln / : )fz7lrdk.idj. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth d+8d)vp5;j,irxw lt tis accelerating vertically upward at )lxjrw,dt;5d i+8 vp 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 at 27 m/s atezxqvc /1c 3 ch5f*lb/ one instant. If it continues to fall, one second later the object would be mzf*c3q1c / hl/v xb5ecoving with a downward velocity closest to:

  95.39: A car starts from restcok3w 0e-j;ayqq 7xo, 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 building strikes the w 9 t5bhjiy2-fground with a speed of 30 m/s. Assume air resistance can be ignored. The heigy bt5ji-fwh29ht of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/s f qoqxa /y4y 2ee8b3/msys p2-in the upward direction. What is the approximate ay o4px2y-y/fm/3 eq e2bqss8 velocity of the object one second later?

  98.14: How long must a *zpf9ixjn k:8kehau0pa 39 w7 $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling objectq j7f b9* /ysmr0rv)nl is found to be moving downward at 18 m/s. If it continues to fall, two seconds )bqjn9rmr 0y *lsf 7/vlater the object would be moving with a speed of

  17.02: A small object is released from rest and fallsfnv:x d7m9m:9v*p pqs freely for 4.00 s until reaching the ground. Wha:qxfd p9vpvm :nm9*s7t was the height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upwe 2r9nngz) 3vqard so that it rises to a maximum height of 12.0 m above the launch point. Ignore air vgrn29q3) zenresistance. 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 straded1,kcl(;yj ight 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 ball to reach the1(d;d,c yklje maximum height from its launch?

  98.31: An object sliding down an inclined plane has speed 0.40 m/s 5t9 ng*j4 rijpt l6s2hbr6j b6two seconds after it begins to slide. Appro sjbr 6hgbtl6pjrn*6 9j24t5iximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower with a spehl s uj3a x l0ov*d,55/v*skfjed of 15 m/s. Coin II is dropped (zero initiall 5x /0k5o uj*,shajl*sdvf3v 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 thf(tztk ouv;(7n 9e0ny rown directly upwards with twice the initial speed of another zv (e(;f97nony0ktu t, how much higher will it be at its apex?

  02.30: A box falls to the l/;(fy-8le5 mdj1msm+)wxf) k; vph1kmt h ed ground from a delivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box to come to rest? -)fmsfme 1v; e;tmmpk)yl+k/dd xhh(15jwl8

  03.29: An object is thrown upwards with a v7zt-xb ojjdh (::taw+elocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the dispx-ao: hb7:j+dtj(z twlacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown verticallvbf. erwhy0(,g h7wi+ nh 0el3y upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stoneehile yv( gn frw037,0b.wh+h. Rank from high to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched ts+lje u8xz7j)0mub/l92hja straight upward with identical linear momentum. Object 1 has mass M and reaches a maximum hei/hxt02aj8ls+ezjlu9b7j m) u ght 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 bounchs0st+ pbnu43mfm4 o8es on the 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 s 4np40mumb h+sft38 owas 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 i0yki ubgw.do.*e9m5 ots minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launch from th.i0.u9obkoyw *m 5 edge horizontal?

  05.02: A pebble is dropped from a high vertical cliff. T4.n yfvt/ei rqh7b hum3 l4.v,he collision of the pebble with the ground below is seen 1.50 secon 7v4himtr.e .vnyb, f/qh3l4uds 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 gara *ex:z :)kovtbge. One student suggested that to determine the heightvoz k:*:eb) xt 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 t)27 ux ojw8gvxs+h*7mz 4z e0nuoh2pline. Its initial position is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system, the s t*ep+87oushu2g 4j0hz xox2) wzmnv7 igns of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled downwa yl as+xhf5))jrds by gravity (down the plane of the page) but is constrained to exactly folsxaly) f5)+jh low 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 9r.ng tiamr7n.0jw9dkubs, o7p: jp : top of a tall tower. Half a second later another rock, twice as massive as the first, is dropped. Ignoring air resisgk wjnu:t,n :drb09op.rj 7pa .9s7mitance,

  06.18: A cart is init02c f(6ejov ckially moving 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 (ceo6 f0j2kc vmoving at 1 m/s. How far does the cart travel before coming to rest?

  07.11: A cart is initially moving h 7jfrob7kj*ar-*t1 8lu2n;lbd gt 1 5up s,czat 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 before coming toj;7zo - tr2 cafu pu*jhrl 7g,k8bd15lb*st1n rest?

  08.03: A dog starts f)vh2awnhs x( 8rom rest and runs in a straight line with a constant acceleration ofn) vah2h(w 8sx 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 a hei0 (cqwk9di (u5rjj v7ijgn(c*ght h above the ground. If the b(j9g(0qj7c ur ni5wv( i*kjd call 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 the r,bar uylgz t7dyw8suf+2a b2v1 + /j9light. 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 dist1+8t79w+sy,/ zgab yfl2ad2bvru jul ance traveled in this time T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizontallzud6l kmkkf 0tdz 35 b6i7qff3,6ii *ky 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 fliql ,dfkk6 3zmtzibk6 fk d5706f3i*uight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The object remains in free fallmx ud vcpco+d5:o38/ 92qztpd until it returns to its initial launch point. Whvd3z x 82 oc/c5tdu o:d9qpmp+ich one of the following graphs could represent the velocity of the object as a function of time during its flight?

  14.03: An object is droexkpg+9*wqui g 9 j.,lpped into free fall. Through how many meters does the object fall duri*upg99j lwqx.g,i+keng the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface in a timlx,yuwr00 /use of 12.0 s. What was t0/xu,ur0 swlyhe initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly -u0v2v8s jsv iaccelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does the cvvsuv2is8- j0 art move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm7 j-tb5,oet,t qnqmr3/s. Five seconds later, the car is moving at -j,onrqe3 qtm7 t bt,540.0 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 velocity of the car during the five second motion?

  14.17: A toy car initially moves to the right at 60.0 cm/nqoyjv0p 33ju8)jez 6 qo0h5ss. Five seconds later, the car is moving at 40jjhnve zy0o )3 3sj 056q8oqpu.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?

  14.33: An object moves with constant acceleration starting w- yqi,2 vugix4rs 4jojd8/jyr:8+ zh vith 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 initiallyh.*wx,t1gwd *s ot53jrv24g fbop +yu is moving upward while in free fall. Which one of the followiws 43,2 dtx*ygh+o51 .w vurtob*f gpjng choices 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 second.taah a7/oem7: bgri; 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. Whar/toa7;i7g ame: ahb. t constant acceleration must the object have during the 8.0 seconds of stage II?

  15.32: An object moving along a line completes a 20.0 secomhsefd,jc/d2pem9 0 2nd 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 ma2hm2j p09e, mcsddf e/gnitude 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. 6c76ljpgfc6vA 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 is the speed ofcfg7l66 pv cj6 the ball relative to the rock?

  16.36: On a straight road, a self-driving car races with a robot. Thega7r- r.hjhtya9xl.j h6),b.wv6 aq e robot accelerate.er .l9g.xajta j)r -6bhvw76aq,yhhs 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 4cokuyz* otrx/:qtsm098 i/ hvertically 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 vert9h/ mo80r t4/x:su ci*ozqkytical position that is one-half of the maximum height it obtains during its flight?