94.01: Starting from rest, object 1 falls freely for 4.0 peb :- ,+a*hdshcq bn)8xlau)zstpz;66 m*du seconds, and object 2 falls freely for 8.0 seconds. Compared to object lz ds,n bq*sx) eup:6ua)dczpbh -6*+8;ahmt1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a , :tpqe 2*lrhg2kvzs+ final speed of 20.0 m/s in a time of 15.0 s,+lq 2s2t he*:zgkrpv. How far does the car travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity.(k0; vfp vh/ns It lands 6.0 s later with a velocity of 40 m/s. What was thefvsk vp;/0nh( initial velocity of the ball?

  95.27: A rocket near the surface of the earth is accelerating vi1 h *cb8iwgmf k( av03qs0tj1ertically upward w(*kismg81jhcf va30q b10t i 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 m/s zlz(k 35btpk( at one instant.z (5b(k3 lpkzt If it continues to fall, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest anaxd+c1*e eahj)) :xr7cra) g jd 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 buijhz9ff a5a1x ;lding strikes the ground with a speed of 30 m/s. Assufj x5h1z;a 9fame air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has ve . -gaeqy0d(sslocity 4.0 m/s in the upward direction. What0es.qa-(dg ys is the approximate velocity of the object one second later?

  98.14: How long mustb0k 5zb lfhg0br /ku-17eiox; 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 object is found to be moving downward at 18 m/s.n y+ghr,e2p 2j If it continues to fall, two seconds later the objecrhe2nygj2 , +pt would be moving with a speed of

  17.02: A small object is released from rest and falls rtuvs:zbj sk326a*xfny - u03freely for 4.00 s until reachingu as2rxn*f vus-yzj0:b 36kt3 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 laun.0 1w graawh/xched straight upward so that it rises 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 magnitwa/h rx w.0a1gude 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 straight upward so that *q ykl9 u3asjh2k55cmit 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 the maximum heightk2 lc5 jqsy3*5um hak9 from its launch?

  98.31: An object sliding down an inclined plgdg54g40 e8v bbjk-jzgo d4 1imo1 a.oane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does it travel in thi.4 jb 0go84d jg1-b gkgaoe4od1mz5vree seconds?

  98.40: Coin I is thrown upward from the top of a 100m r5bzr7l bcw.shn-8;-m tower with a speed of 15 m/s. hrz8.; wbbmr7c5nls - 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 thrown directly upwards with -5d9y1 bjcfp)dd,lxc twice the initial speed of another, how much higher wi-d ,cy dxc5)9fplj db1ll it be at its apex?

  02.30: A box falls to the ground from a delivery truck traverturowsd/7t )3q 8v+ rling at 30 m/s. After hitting the road, it slides 45 meters to rest. How longwqvr s)83u/t rd+r7ot does it take the box to come to rest?

  03.29: An object is thrown upwards wut87j shs w/ve)(x4ae ith a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, velocity ants8weh (vs4/e7ux aj )d acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2)pc nu. 8si kelit/)s 2ucone9i+ o*t3m& 3m) are thrown vertically upward with different velocities (1v, 3u 2k)pe*i8t i.coso+ cist/n lu9n) e2v& 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 upward with iden o )iwz ,)n *v8im9 ,r:rpnyt6yp3obrztical linear momentum. Object 1 has mass M and reaches a mrz pr or3o8n9ypmi)w* by),:t n6,ivz aximum 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 the ground as shown. Afrupjf17 hjne)- ea s- g3zh.r8ter 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 7hp-u-nr8 hras.1jez 3fg)je 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 hncv0*mdc6 z7q)+m. a9p-jw kzzsz6 a projectile in free fall achieved its minimum speed during flight. If c zm. as zpqcnj9zh k+76z*-mwd60)avthat 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 colliso9v8d i1ddx9fw)hj 0dion of the pebble with the ground below is seen 1.50 seconds after thh9 dj9fxidd w10)8odv e pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about thbf0* fcymd+qlv( o;:me height of a parking garage. One student suggested that to determine the height of the garage, they simply had to drop0f* qcm; o:l(dfyb+vm 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 alolrzjg2w r,j egi(64a8 ztn1m-ng a straight line. Its initial position is x0 = -5 meters and it is moving away from the origin and,tage r2 46lm( gz-jz8ir 1jwn 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 g8tp y6q ,ymuh ph og-01wzi: q6 h2fgq/ra1ns1ravity (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 sr8u1o qp6gf ih1yn /qtwqya,z0pmh:-216 hgamount 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 drop6t0jmbg7d(r+m20enz yf 2cng ped from the top of a tall tower. Half a second later another rock, twice as massive as the first, is dropped. Ignz0e 6fgr2m7c+n 0 tg(nj2 mdyboring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The cart csdjlq(v cq*m16)lyih+bu 6a/ omes 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 beforqcj +hib1q 6mlvl s/(*6a dy)ue coming to rest?

  07.11: A cart is initially moving at 0.5 m/s along a track. :8rav5f+n e)y zckvm/ The cart comes to rest afterrmz+8: / av kcfe5)vyn 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 to rest?

  08.03: A dog starts from rest and runs in a straight line with a cons9 pn/sx1zyu59 v2pjmctant accelerationmyjzv9c/ us2xnpp195 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 a height h a- )i3rsgp y33yfa 4hahbove the ground. If the ball falls the first distance 0.5h in a time t, how much time is required to fall the remaining distance 4a3h- 3 gi)py3 rhfaysof 0.5h?

  10.38: Two objects both move and uniformlyok0j zm e t,jy64g//ah accelerate 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 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 thajt a0km6/, e hoz/yg4jt traveled by Object 1?

  12.26: An object is thrown horizontally with 0 o itnxi*o m+i1.cb+k,gl2 yuspeed 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 ground? Ignore air res+ki*li u+tmb0oc12 x,inoy .gistance.

  13.10: An object is thrown straight upward. Thqlzbc33w4ulyg vkq7 8+9im2w e object remains in free fall until it returns to its initial launch point. 3v wuilc24w8 mq+ kl bz9gy73qWhich 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 dropped into free rsyx-et./ixy+qhh2 (fall. Through how many meters does the object fall during the first 3.00 seconds of flight ( t sq/reixhy2y+.hx-?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface in a timkcu))ws /( sg0n9-u/v gggyuge of 12.0 s. What was the initial speed ou0)nkg g )gys/g/cguw uv s-9(f the box when it started its slide?

  14.07: Starting from rest, a cart u/zpo da:+ pe/kniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what dis/zpeko+ adp:/tance does the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five secoko zb36ofla5qsm upd05z21 ) onds 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 repredu zobklmz1)06325 oq5f oasp sents the magnitude of the average velocity of the car during the five second motion?

  14.17: A toy car initially moves to t0 s1 l,if*5 vah vp(-yevyce7the 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 10.0 cm to the left of where it started. Which one of the following choices best represents the magnitude of the average acceleration oyic710p-efvha l v,5*yvtse ( f the car during the five second motion?

  14.33: An object movestg)fqa.n+-kkg3c*h d 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 ; dnrn8(8 nephwhile in free fall. Which one of the following choices best represents the direction of the o p n8n8;hend(rbject’s acceleration during its flight?

  13.26: An object moving only to the right/0 o5bkpbj6yt 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 must the object ha py/06ktob5 jbve during the 8.0 seconds of stage II?

  15.32: An object moving along a line completes a 20.0 second trip ip a:y q+7toy5with 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 during the 8.0 seconds of sta7ayp : tyq5io+ge 2?

  13.33: At the top of a high cliff, a small rock is dropped from rest. A 10ii z abpu)m6a.oiarh-0ll6ball is launchlor)0a zm016aai6bl iui p-.hed 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 qkx ;)(u*zd kb 9n0jboself-driving car races with a robot. The robot accel zkx(o 9q)db u0b*kjn;erates 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. j*b )uangdf7bo7u8b 0The vertical position of the ball 0.70 s after release is the same as it *7ugd80abf7b)njb ou s 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 flight?