94.01: Starting from rest, object 1 falls freely forx;+qu :uuk 3a3- zbixl 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to ob+ b ziux3;x:u kual3q-ject 1, object 2 falls:

  94.02: A car starts from rest and uniformly acco8y *ssj1e)sa elerates to a final speed of 20.0 m/s in a time of 15.0 s. How far e 1j8sos*ys a)does the car travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. It llgoo+4g - oei5o a0s8lands 6.0 s later with a velocity of 40 m/s. What was the initial velocity of the bag a l o5goe0s-o+iol48ll?

  95.27: A rocket near the syv5e0 kt4nd0bv,f 5g lurface of the earth is accelerating vertically upward at gedlv 50,5t kyb40fvn$10\;m/s^2$. 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 * x*(o bdwyq (u cfwp,l3e.5ebm/s at one instant. If it continues to fall, one second later the object would be moving with a downward velocielwuwo*q x*.e (b 5c,fypdb(3 ty closest to:

  95.39: A car starts frqy;i,n1 bnzd3:9tc-q 6awty nom 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 an;w2-dt ;uvmxj 5o9mb building strikes the ground with a speed of 30 m/s. Assume air resistance can be wdbjn2m5; xmu o;9v-t ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free falldehasmw): 1q) cek,-6 uyiwhp;)y pq2 has velocity 4.0 m/s in the upward direction. What is the approximate velocity of the obju;:2, a-q) k eidpmpch)1eh)s wq6ywy ect one second later?

  98.14: How long must a 2d(oxsp jap5 b6bfq:gvs. 3m/$2.5\;m/s^2$ 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 tfy/su4 2(qj vab o6s;ao be moving downward at 18 m/s. If it continues t6av;/a42y fqusbo(sjo fall, two seconds later the object would be moving with a speed of

  17.02: A small object is released from rest and falls freely for 4.00 s unm / cpjmi;8i:sf7n1rvtil reaching the ground. Whj7mi rs1fmpvn8/i;c: at was the height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg ic 1ftd/qmg0 7as launched straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. When the ball r7m ftc1gd0 a/qeaches 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 launche/i*/ jnm 4fvtkd 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 // mkn*fvj4it it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an incl7l 82woec*lk,y8pb1 wvofjq5 ined plane has speed 0.40 m/s two seconds after it begins to slid w5 jy7o8f ,2 wlpkbl1oq*vc8ee. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upwarl x6 l0 .v ar(clgnnaj,h/b-cal,;+ejd from the top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initiax ll0gala+an n/ ,bcj,6cr(l.- e v;jhl 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 twice the initial speed lv(j l;7pli *;d0ynfzof another, how much higher will it l*0; (nif7jvy d;llp zbe at its apex?

  02.30: A box falls to the ground from a delivery truck traveling olji50yvlu ;+bf s*y0 xwc+, yat 30 m/s. After hitting the road, it slides 45 meter u+;+0c0wvib fll,xysjy5 *yos to rest. How long does it take the box to come to rest?

  03.29: An object is thrown u 03,yj:h yd -dn8ikav.klhs1b f;fks7pwards with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, velocbvd-i n31h7kfyk lj8s.ha : ,sfkdy0 ;ity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are c*/na,l+co uferd .nq3p3 xh:thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank from high to low the maximum height of e:.p x c/3 nchqa n+el3o,urf*dach stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight upward with identica+9qqjzvsygl ;k ,0 nd+l linear momentum. Object 1 has m d; ksqq,+ y90zvj+nglass M and reaches a maximum 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. Aflt qu11 eb /wjs7ct ysd-4(neg+s,p-eter each bounce, the ball reaches one-half tsl( u+-tsn,4ye e s/cq 7e t1w-g1dpbjhe 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 bounce?

  16.21: At 1.94 s after launch, a projectile in free faprm4 m awj1/x4ll achieved its minimum speed during flight. If that /m144j wxpamr 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 verticavtr3zfes0r(v;w mcx; b 73c6 hl cliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With7 cm(r33;txhw0r v escvb;fz6 what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking garage. One st7 lfo/jjw.o/ cudent suggested that to determine the height of the garage, they simply had to drop tennis balls fc7/jj oo .lwf/rom 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 straighww74 av0rca x8 b1i8pjt 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 initial position, initial velocity and acceleratiorbw48a7vcpjw18i a0 xn, respectively, are

  04.38: A small point-like object is pulled downwav9am c)e4jhjm +k t.)prds by gravity (down the plane of the page) but is coa4j h p)km c)9t.vej+mnstrained 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 second later a/v:h8wy9m *ac5u hrfanother rock, tw uamy*fwcvhr /:98a5 hice as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s alongoa x*4zkf *2fn 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 to nz*2f xk4fo*a rest?

  07.11: A cart is initiall7m irzznm;3:q y 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 c7mi ;zn3m:q rzart 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 strkzee/ )vnc:i g,l*uh b l1)iqtfo4 3w)aight line with a constant acceler1 tvzc)flg)kbi)h*oluqe e,/i 3 4:w nation 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 resa,wv*c vv5+( ix byp1jt falls 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 required to fal5xb *v, 1jpywav(v+icl the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerate to the right. Azw h fr6:3crakni*;fco /. 3w-6z tpqwk,v:nr t time t=0,the ob.t-z/rk vnrkpqnhf 6w6f3;o:a:w *3wrz,cicjects 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 that traveled by Object 1?

  12.26: An object is thrown horizontally with speed 10.0 m/s from a hei*sh i()fjzygfi5 4w nj0t 6v5vght H above the ground. The object reaches the ground with a speed of 20.0 m/s. Whih0zvv(ji*wnytj5gfi )5 4s 6fch one of the following choices best represents the time of the object’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The object remains in f 5;2q3olzgclcree fall until it r3clc5 ozl;q 2geturns 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 xaej sc-rk -g4in1v1s2t ow7+into free fall. Through how many meters does the object fa1vjn-+e27 14riawtcg- kxssoll during the first 3.00 seconds of flight?

  15.02: A box uniformly slides.rc0*g/ 8xrcbd 7sg.rdz i1op 7.50 m to rest across a flat surface in a time of 12.0 s. What waszsxdrpc8 rbgc7o.g/r1. *di0 the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 7.60 m4 /q cl9imvu oabpn345/s in a time of 3.00 s. Through what distqi/ 43 pc 4amn9obv5luance does the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five seco a(itajthl p, ;r,,dq+nds 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 ca +qh,(aitrp ,;lj dt,hoices 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 6o:vp* +2b 1hnspxni8vf5a h0b cnq .wcm/s. Five seconds later, the car is moving at 40.0 cm/s toq xpb:2v6nafv c8ni5n*w 0bsph+ ho.1 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 move86b ybv-0,bbapyj+7l- p i tpss 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 while in free fall. Which omzb egkj s)3jt o5s47-ne of the following choices j3) -zmkjbtos45e gs7 best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to t-*,, +cgfjux4o xu 26gwxmv hvhe 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-hgojx,u6w f+2, x 4m*xvvcgu 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 alongmrbzh1 e/qrq)d/:ws( a line completes 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 during the 8.0 seconds of : h be/)q1(rdrqw /smzstage 2?

  13.33: At the top of a high cliff, a small rock is dropped from rest. A u 2pc)9p oi-hdk;7 ulgball is launc )gu;k7d9 ui -clpoh2phed 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 selfe:t+ 9z a /yb tcmdfq-(orr*xg5 9pch/-driving car races with a robot. The robot accel+er*/qxacyp(t5ob t99 : c -m rfg/dzherates 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 vertica*9ortl-dz h zbnqci7u(1;s7j l position of the ball 0.70 s after release rsbl h *jz79d;(z1qc7 tnoi- uis 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 height it obtains during its flight?