94.01: Starting from rest, object 1 falls freely for t1 kfk a1r+he ./hfev84.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, object 2 fall 8.f fvkra+khhe/11t es:

  94.02: A car starts from rest and unifo /iey of,s.kvfl :(g(vs 3jgbtu, v3u3rmly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the cariuf, sfv (t3u.vje b3 (v:lg,/os 3ykg travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. It lands 6nspx ohn8 nib9:xb .y.4,nh: j.0 s later with a velocity of 40 m/s. What was the initial h.4x :,jnoxynbh: 9sn pn8.b ivelocity of the ball?

  95.27: A rocket near the surface of the earth is accelerating vertically upwardcj(lb0pg95 z1 p 9zsio at zpjc5ol 09ibs9p1(z g $10\;m/s^2$. 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 08- :cbhcfoyp1 fa7sywy 4y:l27 m/s at one instant. If it continues to fall, one second later the object would -fyl pyc cw7 18:f4boahy0s:ybe moving with a downward velocity closest to:

  95.39: A car starts from rest and accelerate;f9 phrcrbre/ o;o7rfzvc8( 7s 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 buz j6pk6j1 i7vnh2tn8silding strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height i78vt n k6sh6p2 nj1zjof the building is approximately:

  97.09: At a certain time, an object ifxb hzgr (+b j 62v4v/eb7g8gbn free fall has velocity 4.0 m/s in the upward direction. What is the approximate velocity of hzf4 b+e 7 b2bvv(x rgbg86gj/the object one second later?

  98.14: How long must azs9k* wu75ee nb:o 1bp $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling2t rkd1q-6 jrb object is found to be moving downward at 18 m/s. If it continues to fall, two seconds later the b-qdj1k 6r t2robject would be moving with a speed of

  17.02: A small object is released fapcgoei )x 2 pg5j;:j4rom rest and falls freely for 4.00 s until reaching the ground. What was the heaip25go px:gejc;j4 )ight above the ground from which the object was released?

  11.06: A ball of mass =0.1c1 ,fpd 74pijvz +uol:00 kg is launched straight upward so that it rises to a maximum height of 124l:ivzc dpuo+ ,f1 jp7.0 m above the launch point. Ignore air resistance. When the ball reaches its maximum height, which one of the following choices best represents the 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 r.u*uc(at, gp 3xk6;fb hes(hstraight 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 esrh;p *36hgatfbuu(,.kc (x it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined p3ywc bzhks3+qp7 6iq 8idh2*plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how icp qy2bhp+qw3z8d76h 3is*kfar does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a ;v,)i xiyqun*100-m tower with a speed of 15 m/s.uv,i;yqx) i*n 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 twice -5 hj h/kyi** 6kwpg3uy 4if) no5dagxthe initial speed of another,)5w nhkok-ix gg4 yu6jp5ahd 3*/ *yif how much higher will it be at its apex?

  02.30: A box falls to the ground from a delive6 -mqso0c:usxegt- :ary truck traveling at 30 m/s. After hittitxcu0as -:6-mqose g:ng the road, it slides 45 meters to rest. How long does it take the box to come to rest?

  03.29: An object is thrown upwards with(owpgh :i*m ;u0 kqen4 a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direc u* mwq4i o0n:gep;k(htion of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown verthh/5 jrl8 (m9uvh+u gy.xty p)ically 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 heig yhtguh+ux5jy(98l/rp ) v.hmht of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight +mr+qcl 6of8bupward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point.8m o6fblq+rc + If object 2 has mass 2M, what is its maximum attained height above the launch point in terms of H ?

  04.28: A rubber ballbqdpi.35qeb+n9ww ;3d- d ykq bounces 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 was 1 second, what would be the time between the seco 5bk.q+n3e d3-wdpyq;d 9iwbqnd and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fall achiev )dywktjl)n4df0j80on si+5 ved its minimum speed during flight. If that ot f n5 ldkw8sj0d)n )i0jvy4+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 cfte d2gk;- )ajollision of the pebble with the ground below is seen ajd-k e fg2;)t1.50 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 garage.gaodq: yu4u 12ur5z, bii2wln n(8 ad+ 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 balls2 (aurbo 4nu ya2ni8+ w1d5iqgz,l ud:. 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 line.(l0j9iqwwd gt, x0j-km 9ef0i Its initial position is x0 = -5 meters and it is moving away from the origin and sl9j xw wi0q9f0ek,l-jg id(t0mowing 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 gravt.r:i/te v)*) kcchrdity (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) r h edri:tv*c/c).k)tnecessary 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 latepiu 2ire-(2 zqr another rock, twice as massiv(peqrziui2-2 e as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s al3txd+ p(:nyp:x: tg g:yjxcv7ong a track. The cart comes to rest after traveling 1 m. The expv:+ nt :pc:p(dyx:gy3x7 txjgeriment 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?

  07.11: A cart is initially moving at 0.5 m/s along az,h2v2 vt1r v7-gzir u track. The cart comes to rest after traveling 1 m. The experim,-zv v2 t1hg7ir v2rzuent 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 consvkp1 v4lq5hp. bzj ,i1tant accele1k5lq ,1.vhbi p4jz pvration 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 aii 2dsg 6(rg,dfiecg;+r 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 (s+ 2,;dgicrie fdg6 grequired to fall the remaining distance of 0.5h?

  10.38: Two objects both move andn2m6v (e8nvvr uniformly accelerate to the right. At time t=0,the objects are at the samen e(v2vn 8m6vr 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 hov6(mj fifer8, rizontally 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 o8vmjie,r( 6ff f the following choices best represents the time of the object’s flight to the ground? Ignore air resistance.

  13.10: An object is throw 0wq2dxddhifh uz( k52l:,kish , zs-.n straight upward. The object remains in free fall until it returns to its initial launch point. Which one of the following graphs could repr(zkd-:,x 2 ,5z2ldwd .hhuksiqhi0f sesent 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 metett j0 f2 oye t3j-c70mn.5oykars does the object fall during the first 3.00 setf. eon720yyt m k5j30c-at joconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface 9;uqne .dw/o uin a time of 12.0 s. What was the initial speed of the box w e;uu9owd.nq/hen it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a spkmz. brj4r7j 5eed of 7.60 m/s in a time of 3.00 s. Throur4j. 5rzbmk7j gh what distance does the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cmjd)ep -3p(gh p/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(3pd j-pegh)p the five second motion?

  14.17: A toy car initiallm 3o7gsk 30 )ftdn(jspy moves to the right at 60.0 cm/s. Five seconds later, the car is moving at 40.pftk30)7nmos3 g( sjd0 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 dg(xq9dv)u+ p4d1s y ustarting 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 init( ;9uh+ve jnt;9dk:xwl 6pr klially is moving upward while in free fall. Which one of the following choices best represents the direction of the object’s acceleration n9: e(lhp+dtuk;6w;l9rx kvjduring its flight?

  13.26: An object moving only to the right completes ao,g;mnew;c+-n* a 2dn)b gco b 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 veg+cadconbb -2*;g em ,n ;n)wolocity 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 movi*x hk4y m79ifang along 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 o4m*k9 ayi7h xff stage 2?

  13.33: At the top of a high cliff, a small rocdftt i22ryh4v4n, m8n v n4joy9:q vd-k 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 i2ov82-yh n qv:v 9t 4drdnyj 4m4nti,fs the speed of the ball relative to the rock?

  16.36: On a straight road, a self-driving car races with a rr ywuq4ul q+2lk f/ux/./ ;vteobot. The robot accelquuk ;/2/ eqx/tfu yr. w4l+lverates 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 position ofj*t :cqy 52nvzu+c2c qp +jiuu3v5j9 r 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 ob ncqjzc+j9p53 y2 2*uuuq5jvv : +critject first at a vertical position that is one-half of the maximum height it obtains during its flight?