### From RegentsEarth.com

```From RegentsEarth.com
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Ques. #1
The graph below shows the relationship
between the speed an elapsed time for an
object falling freely from rest near the
surface of the planet.
What is the total distance the object falls
during the first 3 seconds?
Ans.
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Ques. #2
A baseball is thrown at an angle of 40
degrees above the horizontal. The
horizontal component of the baseball’s
initial velocity is 12.0 meters per second.
What is the magnitude of the ball’s initial
velocity?
Ans.
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Ques. #3
A soccer ball kicked on a level field has an
initial vertical velocity component of 15
meters per second. Assuming the ball
lands at the same height from which it was
kicked, what is the total time the ball is in
the air?
Ans.
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Ques. #4
A ball is thrown vertically upward with an
initial velocity of 29.4 meters per second.
What is the maximum height reached by the
ball?
Ans.
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Ques. #5
A rock is dropped from a bridge. What
happens to the magnitude of the
acceleration and the speed of the rock as it
falls?
Ans.
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Ques. #6
A student throws a baseball vertically
upward and then catches it. If the vertically
upward is considered to be the positive
direction, draw a graph to best represent
the relationship between velocity and time
for the baseball.
Ans.
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Ques. #7
A device is set up so that when a lever is
released, ball a is dropped and at the same
instant ball b is propelled horizontally to the
left. Which statement describes the motion
that is observed?
(a) Ball A travels at a constant velocity
(b) Ball A hits the ground at the same time
as Ball B
(c) Ball B hits the ground before Ball A
(d) Ball B travels with an increasing
acceleration
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Ques. #8
Four identical projectiles are launched with
the same initial speed, v, but at various
angles above the level ground. Which
diagram represents the initial velocity of the
projectile that will have the largest total
horizontal displacement?
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Ques. #9
Four projectiles, A, B, C, and D, were launched from,
and returned to, level ground. The data table below
shows the initial horizontal speed, initial vertical
speed, and time of flight for each projectile.
Which projectile traveled the greatest
horizontal distance?
Ans.
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Ques. #10
A toy rocket is launched twice into the air
from level ground and returns to level
ground. The rocket is first launched with
initial speed v at an angle of 45 degrees
above the horizontal. It is launched the
second time with the same initial speed, but
with the launch angle increase to 60
degrees above the horizontal. Describe
how the horizontal distance is affected by
the increase in launch angle.
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Ques. #11
A toy rocket is launched twice into the air
from level ground and returns to level
ground. The rocket is first launched with
initial speed v at an angle of 45 degrees
above the horizontal. It is launched the
second time with the same initial speed, but
with the launch angle increase to 60
degrees above the horizontal. Describe
how the horizontal distance is affected by
the increase in launch angle.
Ans.
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Ques. #12
A machine fired several projects at the same angle
above the horizontal. Each projectile was fired with
a different initial velocity. The graph below
represents the relationship between the magnitude
of the initial vertical velocity and the magnitude of the
corresponding initial velocity.
Determine the magnitude of
the initial vertical velocity of
the projectile when the
magnitude of the initial
velocity is 40 m/s.
Ans.
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Ques. #13
A machine fired several projects at the same angle
above the horizontal. Each projectile was fired with
a different initial velocity. The graph below
represents the relationship between the magnitude
of the initial vertical velocity and the magnitude of the
corresponding initial velocity.
Determine the angle above
the horizontal the projectiles
were fired.
Ans.
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Ques. #14
A machine fired several projects at the same angle above the
horizontal. Each projectile was fired with a different initial velocity.
The graph below represents the relationship between the
magnitude of the initial vertical velocity and the magnitude of the
corresponding initial velocity.
Calculate the magnitude
of the initial horizontal
velocity of the projectile when the magnitude of the
initial velocity was 40 m/s (show all work including
equation and substitution with units)
Ans.
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Ques. #15
Fill in the chart below will all known
information:
x
Vi
Vf
a
D
y
Vi
Vf
a
d
t=
Ans.
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```