Chapter 5 Physics 1

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Chapter 5 Physics 1

• Projectile Motion
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  to get an A!

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• For a vector, the arrow represents the ________
  and _______ of the quantity.

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magnitude and direction
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True or False Velocity is a scalar quantity
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False, its a vector quantity
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A scalar quantity includes only ___________.
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magnitude
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Example of a vector quantity
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Force, acceleration, velocity
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Example of a scalar quantity
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Time, mass, volume, speed
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An airplane flies in the same direction as the
wind. The velocity of the airplane is the sum of
the airplanes velocity relative to the air and
the winds velocity relative to the ground. True
or False?
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True
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The result of adding two vectors is called the
___________.
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The resultant
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The resultant of a 3 unit and 4 unit vector that
are perpendicular is __________.
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5 units
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Any vector can be resolved, or broken, into an
equivalent set of two______________vectors at
right angles to each other.
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Horizontal and vertical
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True or False? The two perpendicular components
of a vector are independent of one another.
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True
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The _____ component of velocity in projectile
motion always changes with time.
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vertical
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The relationship between the horizontal and
vertical components of velocity is _____.
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Independent. Dont affect one another.
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Ignoring air resistance, the horizontal velocity
of a projectile is ____________.
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constant
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The vertical motion of a projectile is the same
as that of a _____.
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Freely falling object
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The path that a ball follows when it rolls off a
horizontal desk is _____.
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curved
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The path of a projectile with constant horizontal
velocity and a downward acceleration due to
gravity is ____.
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A parabola
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The path of a projectile is called its _____.
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trajectory
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The curved path of a projectile is caused by
_______.
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Gravity and (constant horizontal velocity and
increasing vertical velocity)
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The equation for the distance a projectile falls
below an imaginary straight line is _____.
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D1/2gt2
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The vertical component of a projectiles velocity
at the top of its path is _______.
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zero