94.01: Starting from rest, object 1 falls freely for 4.0 seconds, and objeca:*rmvn;o/.nfbd 9lwkj ;+h;ir / go(+i qg qmt 2 falls freely for 8.0 seconds. Compared to obd*(;. b/fin;:rn+m wjr moloqg9 kavg; hq+i/ject 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to ajo 1+v b7kp;54vjij.5br eyq u final speed of 20.0 m/s in a time of 15.0 s. How far doiu jj1+ y p4brkb5e. 5j;v7qvoes the car travel during this time?

  94.03: A ball is thrown off a high cliff with no hori7g5 wa1tkf0h bzontal velocity. It lands 6.0 s lata1g7b0tw kh5fer with a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surfabh +w3ynny)hcwu :k;y y:s i,(ce of the earth is accelerating vertically upward ays(3 c:nn:b,i whyy+y ;ku)hwt $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is found 3d9s (/ bvqpxqzgu6(t ju, v8vt9zdo0 to be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be moving with a downward velocity closest tos uqtv9(6d,8t(zoxvd93u0zjb g /qp v:

  95.39: A car starts from rest and accelerates l za sls;o bx:8+9ovn/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 toh2zsl.kmu7 ldq6 w,/p;y;yfa p of a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of,/lqasfh6 ypk7m 2yw ;lz.;d u the building is approximately:

  97.09: At a certain time, an object in free fall has velociturnt73 ovq6i5g5xfj -.g-l ht a2/l nby 4.0 m/s in the upward direction. What is the approximate velocity of the object one/ joab2nt fr57htngx3 uq gv.lil5-6- second later?

  98.14: How long mustj:nh ltf(6n6i 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 obje4: kahi7v83de,0s 7jgt -9o yd wq0 ft9mwdqlzct is found to be moving downward at 18 m/s. If it continues to fall, two secondsq9 sl etmdyg4,97fodq0kd iza 8v:wtwh 7-j30 later the object would be moving with a speed of

  17.02: A small objec3(9a cao svqw,6 apli.( knm8it is released from rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground from which the object was r6cvailn (3.mak ai8q po,ws(9eleased?

  11.06: A ball of mass =0.100 kg is launchehap (/+5jph hed 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 folloap phj+h/h5e( wing 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 isgx ;:wir mlq0: launched 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 does it take w;g:xr0:mq lithe ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plane has speed 0.40 m/s two secondosj1q3dfcfaszfd ) pthp3h c,8f+y8l+k402 ds after it begins to slide. Approximately how far does it travel in three se3f,dfc0qdc)z3s y pf18splh+dka24 h 8j+f toconds?

  98.40: Coin I is thrown upwou:hm.ghpb*3i *rlty u /5ca+ard 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 2.0liar+ct /5m hh.ubu:g o* yp3* 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 withv3jpemrxn ::1 twice the initial speed of another, how much higher wil3vmp: 1jn erx:l it be at its apex?

  02.30: A box falls tl-e6a ifhr3j5f c cd.9o the 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 toi rf9c3jcla6 dh.-5e f rest?

  03.29: An object is thrown upwards with a velocityd r(uopn)y2p9y*w+jdd x )g.i of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, velocity and acceleratio) d+rjio x.wn*dgy)u2d9(ppyn?
displacement velocity acceleration

  04.10: Three stones of different mass (jcs00 ae,v 1jz ho 1tt6od1z3x1m, 2m& 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). t1ovz110ajh3t o j0s ,ed6czxThe 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 cg he.:pk56x9. hy1n seip3quwith 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 max9.ppus1yg: n3 iq65kehh c ex.imum attained height above the launch point in terms of H ?

  04.28: A rubber ball bounces on the grou3;klwsb/ p tl8nd 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 the second and third lwl sp/;b83kt bounce?

  16.21: At 1.94 s after launch, a projeu/-2 sktmeq,j- +5eh9 qxnelhctile in free fall achieved its minimum speed during flight. If that minimum speed was jn x m-,5eq2te/qlk uh+sh-9e 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;z6onv+n 8zookw ;xu( cliff. The collision of the pebble wkx;( vwu +o;o6zzno8nith the ground below is seen 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 geczim(5 wsd+ c/an ),carage. One student suggested that to determine the height of the garage, they simply had to drop tennis ballsz+/cc mi (,secdna5)w 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 alongj+c0lmiku61*h *thr z a straight line. Its initial position is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system, the signs of the ini6 l+mi0u*jk*r ct1z hhtial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulb 4 oxb+b i(9p.jgdftk v3g28oled 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 changing direction that there is no loss of energy and that it takes negligib32fb ob(8 4jog x9pvbk i+tg.dle time.

  06.13: A rock is dropped from the top of a tall tower.0bbr4j z) huw(la wv36nx3 a6p Half a second later another rock, 3bjw)4bw vu z660 xan(rpal 3htwice as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The carf roflbhv9 +q/ec2l-.t comes to rest after traveling 1 m. The experiment is repeated on the same tracklve b2q-lo. c+9f/hr f, but now the cart is initially moving at 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 ,-k cm xunwcjeny7bxk8 5t);+. The cart comes to rest after traveling 1 m. The experiment is repeat8,u cjw-nk)+xktxc5b7 yn em;ed 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 iwmev /(-- ovpa constant accelerationi vo/-pvw-( me 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 fal0oe0sv .s.q-z fi t:4qk,pgv als without air resistance from a height h above the ground. If the ball falls the first distance 0.5h in a time -kqai0 pz te:.4 osgfs,0.vqvt, how much time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly acceleratlyzg 0q g3jj+mo76de5 e 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 oj 7ezjd3 + l0mgygq5o6f the distance traveled in this time T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizontally with speed 10.0 m/s fro+9h x sptdxk79m 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 r99st7x dxk +phepresents the time of the object’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The objemqlms-n 6ebfuf k/9( 0k u;+8 wjg6wsxct remains in free fall until it ef;w-s0(w juk/8 g9b uf6mmlq+x skn 6returns to its initial launch point. Which 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 fall. vwb, .6xn9hf f 0zwmp)Through how many meters does the objectw 6p.9f),m0hvfw bxn z fall during the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface in a3ex2 e yx)jy6n time of 12. 6x2ey 3j)exny0 s. What was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart unifore7hfs*:pam hhe-l2 9cmly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does the cart move in2*hesh -f9:lcap7ehm this time?

  14.16: A toy car initially moves to the right at b3wz(mt3 +zrbs; a;l l60.0 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 choilmw ;zal( zb3t;sb r3+ces 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 rightriri6- r.j4t4vzr 3gi,d28pq(ru2 wt jlq br. 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 of the car during the five second mo2qzj rt- qir84b3r(i u2itl,pr6d r4..gj vr wtion?

  14.33: An object moves wc 3h)r9vij yx77o j;a4m+sp nlith 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 one di8g1f laa, (on.fqc3of the following choicesoi fq 8g,1c3f.da(anl 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 secondv 8 (xexi ,ybrybqb;:; trip in two stages, I and II. The average speed of the entire trip is 10.xr(bqb,y;yvi; b e:8 x0 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)ibmlb .:m 7kov1ckz9 ;/ceg s line completes a 20.0 second trip with an average s;i7s.1b)e mczg/b cl o9mkv:kpeed 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 stage 2?

  13.33: At the top of a high cliff, a mzt3 1nutgk;*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 is the k1u;z 3gnt*mtspeed of the ball relative to the rock?

  16.36: On a straight road, a self-dri r/)8a.iutabap7 el;8tk kyvkat3 f0(ving car races with a robot. The robot accelerate vkt7)03a at8(8a tk; ibpykre /uf.las 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 v;5m0asc um:8wrypx 3 n::ew hbertical 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 objmpcwy3msu5r: :xw: 0eb ;hna8ect first at a vertical position that is one-half of the maximum height it obtains during its flight?