Terminal Velocity
This lesson covers:
- Why falling objects reach 'terminal velocity'
The force that causes an object to fall towards the earth is:
Weight
Air resistance
The contact force
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The size of the air resistance is dependent on the object's ______.
surface area and velocity
weight and surface area
velocity and weight
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The force of air resistance is caused by the moving object colliding with particles in the air.
True
False
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As the velocity of a falling object increases, the air resistance:
Increases
Stays the same
Decreases
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We say an object has reached 'terminal velocity' when it is falling with a _________ velocity.
decreasing
increasing
constant
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Terminal velocity is reached when:
(Select all that apply)
The resultant force is zero
The velocity is zero
The weight has the same magnitude as the air resistance
The air resistance is greater than the weight force
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If a ball is dropped from a plane and has not yet reached terminal velocity, then the ball must be:
Stationary
At constant velocity
Decelerating
Accelerating
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