94.01: Starting from rest, object 1 falq(.xz jqc c;66jxgcb3ls freely for 4.0 seconds, and object 2 falls freely for 8.0 secon c;qx(6.jcj 3z6xbcqg ds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a smory *c( c+rqmo.;p2 final speed of 20.0 m/s in a time of 15.0 s. How far does the car tra; mc.cosmy *q2ro (r+pvel during this time?

  94.03: A ball is thrown off a high cliff with no fcdt-9slner:10bj fa0n f6 : zhorizontal velocity. It lands 6.0 s later with j-zs0fcrnlne0 96:fft1ab d:a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is acceleratin,i) 6(,mlt7s4xvje7)ea nl nka, kqhog vertically upward at okevm,a)a(7eln ,ts k6l4i,q hxj)n7$10\;m/s^2$. 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/iezrj m943 9nf29xp lgol9p0myrd8n8u8mx d-s at one instant. If it continues to fall, one second latmzp3889 oddl2u0lm8r4nrjxnx e p-9 9g yf9mier the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and accelerates at n og o8*wbu8q5$0.80\;m/s^2$ 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 buildingahhj br98 b5l- strikes the ground with a speed of 30 m/srjlh 9hba 8-5b. Assume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fi fsrtalx-q5i /gt 5vc)w22hfv ;+ zv*all has velocity 4.0 m/s in the upward directv2r 5hs+cv)wvqf xz 5; 2lit/-i*tfg aion. What is the approximate velocity of the object one second later?

  98.14: How long must a (qc nqf26g1na elw1+ z$2.5\;m/s^2$ 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 18mvfz(te41 6e e m/s. If it continues to fall, two seconds later the object v16ez f4emt e(would be moving with a speed of

  17.02: A small object is rele dnkn 5(bqm-/4fqqy-3 jbvih9ased from rest and falls freely for 4.00 s until re 5j- n4i- vnh/kb(qdyqbmf9q3aching 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 launched straight upq-ufabs3m w 08ward 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 magnfsa w0q3- 8umbitude 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 str9 ) sos2vgw0o 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 the maximum height from its launcswsg0t ro)v29 h?

  98.31: An object slidj xv-d kqcbh2(g,w uz8ao 6++ding down an inclined plane has speed 0.40 m/s two seconds after it begins todv,8+d+q2x czbgou-j k6h a(w slide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thro*+5 lnrl mq3ezwn upward 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 la+lmrenz q l5*3ter. 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 ugsfpkz p)r9.mo3 w(l;pwards with twice the initial speed of another, how much hig(;)lgkrz.m3po p w 9sfher will it be at its apex?

  02.30: A box falls to the ground from a delivery truck traveling at 4ok5eqlw5o5waf /j18,tbx rva q6w;n 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it o 51qaawj8 l 4tkrqv/nx,;fw6eo5b5 wtake the box to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/s near th 4-i9c0avpvc je surface of the earth. After two seconds whatc-9iva cv04jp would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1y,fxj2*f g6l tm, 2m& 3m) are thrown vertically upward with different velocities (1v, 2v& gy 2,fj6t*x fl3v 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 7.ualvwzm :n3 with 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 maximum attw.v:l zn7aum 3ained height above the launch point in terms of H ?

  04.28: A rubber ball bounces on the ground as shown. After eac r3 hnrgm(/yb0h bounce, the ball reaches one-half the heightnhbm 3 (r0/ygr 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, j y6jeg-vn52t a projectile in free fall achieved its minimum speed durinejjny 2- g56tvg 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 collision of theo:y4ybjp7i8g3i1x0qv p-4i g 8ye jnv pebble with the ground below is seen 1.50 4o expyg:jyp0g in ii88v- v1j4yq3b7seconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about xj vl9h.hsl :pee w*3(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 falphwhlvs(l ej:3.x e*9l was 1.4 seconds, approximately how tall is the parking garage?

  05.07: A snail is moving ox95 4ym4bbcocieghk )od0 u3z. * j7balong 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 theod coj9)73cy m.4kei50ho gbzbx4bu* initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled downw.kg8g11jclpsz/b9 yy 8mnl8j ards by gravity (down the plane of the page) but is constrained to exactly follow each of the frictionlemnjcj /l8ypsk. 8y g1b l8z19gss 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 anothx ho (ebsxau)i+7i j,0er rock, twice aas7i )i0xuoj( x+e,hbs massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initiall 5qpbxa3 c9/huy 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 moving at 1 m/s. How far does the cart travel before 9 bxac5/p3uq hcoming to rest?

  07.11: A cart is initially moving at 0.5 m/s alonqhf 7)5q ru-95 7 *sndyjsnngog a track. The cart comes to rest after traveling 1 m. T7hn ynjr*u59go-) 7dq s f5sqnhe 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 constant ay0b+8bv 5cdq cccele 8ybdqbcc05v +ration 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 uc rnt3pu-if++j -99 avsf7ihrest falls without air resistance from a height h above the ground. If the ball falls the first distance 0.5h in a time t, how9 +f-ar+9cnf-u th3p vj iui7s much time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and u;p:ouu r.2guzk7;c fi niformly 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 sou:oz c7;gipu.rfk ; 2ume 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 f sslpp9*inlv -8i0a 9trom 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 flvptla9 l9ii80p* ss-night to the ground? Ignore air resistance.

  13.10: An object is thrown straight ubjn9*+xkh:xzc9 c .- r qvlh7hpward. The object remains in free fall until it returns to its initial launch point. Which one of the following graphs coul ch hr.nxq:-*k +j c97xz9lbhvd represent the velocity of the object as a function of time during its flight?

  14.03: An object is dropped into free fall. Through how many meters does t9v *:at0r9 ms2gft3wi/dv snt he object fall during /vai92t:t3 * vn0td9mrsswgfthe first 3.00 seconds of flight?

  15.02: A box uniforml h gtb 961:jeufamv)/uz:qy 0hy slides 7.50 m to rest across a flat surface in a time of 12.0 s. What was the initial sp:)zvfu u qea ghy09h/:mb6tj1eed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to ;amq8 f94s,p5vbv mgvzlv:7 na speed of 7.60 m/s in a time of 3.00 s. Through what distance does the cart move is: qfm,847lz;v av9pb m nvvg5n this time?

  14.16: A toy car initially moves to the right at 60.0 :frr:a o-**ja u;v)ln ;kxxf tcm/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 velocity of the car during the f;lu- nx j*r f;rfkoa*) ::vxtaive second motion?

  14.17: A toy car initially moves to the right at 60.0 cm/s. Five seconds later, lcia2 j.4dmx:the car is moving at 40.0 cm/s to the left. Tda .24il j:mxche 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 with velosu ;wt*x 9 f gnyrr wimv(f+6r/iga2xm( ai821city $v_0 = 5.00\;m/s$ 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. Wq )br6r35vw.e kl,kqahich one of the following choices best represents the direction of the object’s acceleration d6q5k) l.3b,kwqvar re uring its flight?

  13.26: An object moving only to the right complete*(7xwx ;iugfri2tn)p2j, b u( +tyhun s 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 ntur(u,b nupy *2j) 7hg;iiwtx2xf+(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 line 2qruhrc*e+ur yymk6 9:;u+dkcompletes 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 acr:6k +9dcuuuym*2qr+; h k yerceleration 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. A8q1,nmlrm.ju ho9t;tksqk-p8rq 2 i6 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 dr-i,umqkm.p nsq828 kqo6 rjh; t1tr9 lopped rock, what is the speed of the ball relative to the rock?

  16.36: On a straight road,rtue b)5gp5-pklk :y* a self-driving car races with a robot. The robot accelerates 5pptg 5ry-*ukkl eb) :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 vertical positionps thnu60eymsr 1:4z ( 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 vertical position that is one-half of the maximum nry1zt ms06e4 ps (:uhheight it obtains during its flight?