94.01: Starting from rest, object 1 fal 9u(lww ktedyt0hws*jkcs6 p/b2, u 4(ls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared j*tu2(4u cw tsb09,6y dww/k hks(lpeto object 1, object 2 falls:

  94.02: A car starts from rgd3 huhywal8847 :nd:, j tzwlest and uniformly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travel during this ti 8ayd3u8hl:hld7 4n,wztwjg: me?

  94.03: A ball is thrown off a high cliff uj +8-rvyr(6qdzw9b fn:f2nc with no horizontal velocity. It lands 6.0 s l nry9brnc6+q- v:j ud2f8wfz( ater with 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 accelerating vertically upward f vm.r 8q5i0paa0r8a. p5qfmvi t $10\;m/s^2$. 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/2o6bs l-ytz d9s at one instant. If it continues to fall, one second later the obz6-toy9b d 2lsject would be moving with a downward velocity closest to:

  95.39: A car starts frofjl.+9 3:a-l yb waerbm 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 a building strikes the gihksci/.( r64z,ouz 4dy6yzw p -ovo 8round with a speed of 30 m/s. Assume air resistance can bso pzw .,ryh6od4i4-v(zuozi8 k 6 y/ce ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/s ii8bi *v1xnll/kktj1 -n the upward direction. What is the appr8b-i 1xk*lv tj/klin1 oximate velocity of the object one second later?

  98.14: How long must a kz w x9e-+ jr6ffw4e)qua6s9p$2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling object is fog,, cd djl(h:l5; ultgund to be moving downward at 18 m/s. If it continues to fall, two seconds later t,dc lg:;jugllt5,dh (he object would be moving with a speed of

  17.02: A small object is released from rest and fa rm/b.zsnvnv(s1b (c;lls freely for 4.00 s until reaching the grounvrss cmn b(z n;(v/1.bd. What was the height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is lwtgj+aeq 0 -9*jut vj*aunched 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 magnitude of the net for9aegwqtj t*u* +j0-vjce acting on the ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 kg is launched stmw.+l g w3h/7fyy 3qjh3ok3tqraight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. whqy 73o3fwg3 +ty/3mlqj.kh Approximately how much time does it take the 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 secondo85u2( k3uou+p-hv si eikfd9 s after it begins to slide. Approximately how far does iv+eu5k uof iuk dh893-s2po (it travel in three seconds?

  98.40: Coin I is thrown upward fh x wk7fl+id)jj +c83rakl/9 vrom the top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top if hwl cdkk/vl9j8+x3r)+j7a 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 dq2k 0+q1wpnr jxd1e u: 0+fns h-/zkpmirectly upwards with twice the initial speed of another, how much higher will it be at its apexn/++pds1 2: n 0feph -qr 0kmqxz1kujw?

  02.30: A box falls to the ground from a delivery truck traveling at 30 m/s.nj5z 8px x345mq a6rm0nyi rf4 After hitting the road, it slides 45 meters to rest. How long r0x8znn6qm4x m3 f5paj y5ir4does it take the box to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/s near the v ,s grg 8yd0kgsew);0surface of the earth,gy;sggks r)v0d80 e w. After two seconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m,w/goy )(m mvp4 2m& 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and veloc4) mwvmp(/ ygoity 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 6 5ejg s.o 6c5axp5nnuwith identical linear momentum. Object 1 has mass M and reaches a cpog5 6.uejxn5s 56anmaximum 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. After each bouncivetdf z)*) z*e, the ball reaches one-half the height fze*)i )tzvd*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 aft fll/cs) p2lm;er launch, a projectile in free fall achieved its minimum speed durl)p/m2ll c sf;ing 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 verticjy8k(x9of+xvi n5e*yc*e;y yk +ey 3lal cliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit the grounxcj9*y35fy (x+ 8vyeki +;*ye loekyn d? Ignore air resistance.

  06.03: Three students were arguing about the height of a p ckzsw 2us d*8)*e6y3k/gkplparking garage. One student suggested that to determine the height of the garage, they simply had to drop tennis balls from the top *w2dc)*3s/6g py zseukplk8 kand 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 straightg8o2 kh*dce2 m line. Its initial position is x0 = -5 met*ockg2 dh8 2emers and it is moving away from the origin and 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 downwarq.kcli6m8z l j,nxf8c b8oka;k 1)z;o ds by gravity (down the plane of the page) but is constrained to exactly follow each of ;c81cxfon ko 68q zlzi,k.jmk8ab)l; 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 tow*;qnxziru3m1a f 6 6coer. Half a second later another rock, twic u6nx6 mc3a;zf oir*1qe as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a tr ja07f2iv wnw.ack. The cart comes to rest after traveling 1 m. The experiment is repeatefv7na2 wji w.0d 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 a trackg2 sqv95c,lo n. The cart comes to rest after travelsgoq2v5n9 c,l ing 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 from1)46jmyo/vxvd2gfb*0 te oig8) llbe rest and runs in a straight line with a constant acceleration o/veb1b 0g4ly)gi* ed ftjx2ov86 ml) 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 ab ajmjs 6eey8-4a(/pasl)l v n*ove the ground. If the b8a a/y(6-*pmjl v4)esas jenlall falls the first distance 0.5h in a time t, how much time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerate to the righs)6gf8 fut2k nt. 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 nfkt2u6)g f8s, 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 1064lu0el. k wzd.0 m/s from a height H above the ground. The object reaches the ground with a speed of 20.0 mk.w40e dzll 6u/s. Which 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 fre ij3jwoq+t2j (e fall until it returns to its initial launch point. Which one jji+32 oqw( tjof the following graphs could represent the velocity of the object as a function of time during its flight?

  14.03: An object is droppedf* y*urp rpi8fj.: u+t into free fall. Through how many meters does the object fall during the first 3.00 seconds of fligf.ry*u:p*+8 ujt r fpiht?

  15.02: A box uniformly slides 7.50 m to rest across a flatl2 wt(-xo-yf/ ey 5sig surface in a time of 12.0 s. What was the initial speed of the box when it sl/2iex5g t(wyfy - s-otarted its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a sy g(,gh/ i/yjm6rl-da peed of 7.60 m/s in a time of 3.g,iya(mdrg/l -/h y6j00 s. Through what distance does the cart move in this time?

  14.16: A toy car initially moves to the r .bi ai 01h+qd0tl/e6xv.pwrjight 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 l 1.6eqhr+ i0td0pavi wlbx/.j eft of where it started. Which one of the following choices best represents the magnitude of the average velocity of the car during the five second motion?

  14.17: A toy car initially mhl9ys9/ ofv .toves to the 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 durintyfo9/hvl s9. g 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 velocithfl-v(-(t bft,+v vub y $v_0 = 5.00\;m/s$ 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 bsaajx5:2kl x1j *t:xis moving upward while in free fall. Which one of the following choices best represents the direction of the object’s acceleratio jlx2btj:5xs :kax1a* n during its flight?

  13.26: An object moving only to the right comw (9hr6 p(/ec3pffrlf pletes 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 accelerarffple6r w(h 3/pfc9(tion must the object have during the 8.0 seconds of stage II?

  15.32: An object moving along a line completes a 20.0 seb+)o aa,2huckcond 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 seconc buaah)2+,ko ds. 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 hi :,cvua7ibt 0tgh cliff, a small rock is dropped from rest. A ball is launched straight dt:7a0 c,itbuv ownward 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 straightmq2k,gn r 4w 3flx3-sn road, a self-driving car races with a robot. The robot acceler-g 4kn2w r3m,nfl3s xqates 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. (tc, iubm(i .t/+29q 64dfzyio supmjThe vertical 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 object first at a vertioiymt,i cf +mtu p (siqz9/.jdb6u4(2cal position that is one-half of the maximum height it obtains during its flight?