94.01: Starting from rest, object 1 falls freely for 4.0 seconds, and of *bpi-u1 8ctkbject 2 falls freely for 8.0 second*c8-tik b p1ufs. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly acce ;otdz8cz: 0oelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travel durinzt zoce;do:0 8g this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity.j*qq :ymp-; gsagj; i5 It lands 6.0 s later with a velocity of 40 m/s. Wh5 jg ;yj*:aq;iqm -gspat was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth jwwk70 6 -0qel tvro/qak2hp*is accelerating vertically upward qeww-k*6lk 7 0 q0/j2rvhopat at $10\;m/s^2$. 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 msdjb q6x/u 1-voving downwards at 27 m/s at one instant. If it continues to fall, one seco6b/ u1 qxsvjd-nd later the object would be moving with a downward velocity closest to:

  95.39: A car starts from r 2-dkx ;ackewr9i 2mx8est 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 ground wingnb p5 8q*7pxg7 o;zawgi 3g8th a speed of 30 m/s. Assume air resistance can be ignored. The height of the building is approxibggwngq77*g;588 3ozpxn a i pmately:

  97.09: At a certain time, an object in free fall has velocity 4d0w.:w94uhhes ) q5 )ryctev2 dpwmu8 .0 m/s in the upward direction. What is t2v) y dscww.0pqtr8ehhe54:d )um9w u he approximate velocity of the object one second later?

  98.14: How long must a 4q5ugzo5i09ad/ mg a4n sfwt;$2.5\;m/s^2$ 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 xj ;:wa 8p1rdpto be moving downward at 18 m/s. If it continues to fall, two seconds lat xp8rapjw: ;d1er the object would be moving with a speed of

  17.02: A small object is released from rest azz/wxr (,mk -mnd falls freely for 4.00 s until reaching the ground. What was the height above the ground from which the object was released(x w/krzz-,mm ?

  11.06: A ball of mass =0.100 kg is launched straight upward so that it rises tol2vo d7(pkvg5 9 1ewtnsnw l19 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 magnit1nvwde57s(w1logp 2knl9vt 9ude 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 so that it rjs:t r6du9a/ jises 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 maxit :jr9udasj6 /mum height from its launch?

  98.31: An object sliding down an in*d (sh rb9-;4kqfes 0zwyie r7clined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does it travel in three skbrrzse y(4;sewhfqd -0i7 *9 econds?

  98.40: Coin I is throwgx+b vf4ek/q1 n upward from the top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from thekg bq/4x +vf1e 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 nd5zxk/ga q5 /of another, how much hi5xa/k gqn5z/d gher will it be at its apex?

  02.30: A box falls to r jxpqw0h7(:kthe ground from a delivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How lo(kjx0w rp7 :qhng does it take the box to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/s near thekmbaiin89k) ne 56w c6 zvq+5l surface of the earth. After two seconds what would be the direction of the displacement, velocity and q5+v6biem9wa56cnk 8in)klz acceleration?
displacement velocity acceleration

  04.10: Three stones of different masa) dx 6+vl *jp2hcxg+xyxq.+dg9qdk6s (1m, 2m& 3m) are 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 heighxk6c2qv dd)qad+gjg*x py .6+l+9xh xt of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight upward with idensw xr e *t*4lz3wnzm/,m*jnu1tical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If lu*m3nztwswz*j* e x1,rnm4 /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 th-j2d htbu uc2)e ground as shown. After each bounce, the ball reaches one-half the height of the bounce before it. If the time the ballubh )-cuj 2dt2 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 projectilehs-k8q - jtee0 in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launch kj8q0 -esht-efrom the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. Th 8qbbzw/r4xdb3,c.n ye collision of the pebble with the ground below is seen 1.50 4qb8 bnxryw,db /3 z.cseconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three studentsnc-z*63-rz x xaimb1 q were arguing about 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 -1c*xinxzq-m6b rz 3a 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 straight line. Its initial position is x0 = -.rbqk a6e e68d5 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 acceleration, respectively, ake6d.q a8 eb6rre

  04.38: A small point-like object is pulled downw.uburh+t 7 x( b,93 sytrnhwi)5 c.e;eq)gvmwards by gravity (down the plane of the pa (wmcg3uq s9)y)v, +heebi.t b7.trhxur w5;nge) 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 negligible time.

  06.13: A rock is dropped from the top of a tall tower. Half ao *)dnb5c -goq second later another rock, twice as massive as the first, is dropped. Ignoring air resistance,ob5q g -od*nc)

  06.18: A cart is initially::esii*ercx 9mg2jc)k*f kjqb ;s+u( moving at 0.5 m/s along a track. The cart comes to rest after traveling kbecc f;em:):j*2j +kg i qi(r*s9xus1 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?

  07.11: A cart is initially moving at 0.5 mfv8 py jp (b;xq;:2yku/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same tbp:qy;xy jp8k2fu (v; rack, 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 c/ljc+ t :k,;*fn tgact3k4scg onstant acceleratioc;f :gs4c ,tt*tj kg3n /clk+an 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 heigh,wiufhxf, 2 s2t h above the ground. If the ball falls the first distance 0.5h in a time t, how much time is required to fall the remaining distance ifwh,s fx,u22of 0.5h?

  10.38: Two objects both move and uniformly accelerate to the right. At time t-cd/xwj8f ccrd f (/ -5otnzg5=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 o--f cw/don tjz58xd/f gc5(crf the distance traveled in this time T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizontally withma -6e 8 7kt*jxr5lpi/r0 jhdb 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 of tdi80a-htrk 7j x/epm6*5rb jl he 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 free fal 3vmsd ,cl7x5nl until it returns to its initial launch lx3 7sv 5c,dmnpoint. 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 fal6j29qhmn4zi h l. Through how many meters does the object fall during the first 3.00 seconds of flight?m z6ijh 49hn2q

  15.02: A box uniformly slides 7.50 m to rest across a; pz;fz6 gn8b4iqqj:p flat surface in a time of 12.0 s. What was the initial speed of the box when it startei:b4;;gqzj8nz 6 fp qpd its slide?

  14.07: Starting from rest, a cart uniformly acceod5h 9 e ;dp,w1iwvxy9lerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does vde1iyo;p d9wx ,59hwthe cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five seconds latjd n7 8os9)pt/sk2gxb er, 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 on28o)dtpn7k sjx/bg9se 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 moves to the right at 60.0 cm/s.npa mdc+ .ei1. Five seconds later, the car is moving at 40.0 cm/s to the left. The total displacement of thepnad. 1cie +m. 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 velocii:(+5pw wu qjgagq5c2ty $v_0 = 5.00\;m/s$ 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 8woa 9r1kzzvz1wuq , *is moving upward while in free fall. Which one of the following choices best represents the direction of the objervz9z1wqw8z oak 1u*,ct’s acceleration during its flight?

  13.26: An object moving onl gzy1 3uyd.c g08tr)ns8(dfwk y to the 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 object moves with a constant velocity of 6.0 m/s for 12.0 seconds. What constant acceleration mzykrgf0(sw du.c 8)gn1d 83ty ust the object have during the 8.0 seconds of stage II?

  15.32: An object moving along a line completes a 20.0 second trip with7erhs ihi48vovr rx6+1 (g;d b 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 tovg71ho(v+xh6rib 4e 8irsrd; the left must the object have during the 8.0 seconds of stage 2?

  13.33: At the top of a high cliff, a smbt;t1 . sathdt f5srsrr.*+ :xall rock is dropped from rest. A ball is launched straight down tsh1stasr+t;bx 5td rfr*:..ward 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 self-driving l9y0q gg2dq0 pcar races with a robot. The robot accelerates0 q2d0l9q yggp 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. Thv3y cie6/pa p 7g;x6pee vertical position of the ball 0.70 s after release is the same as its vertiey6;xg epa7 i6/3pvcpcal 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?