Welcome to the Quiz!
This quiz contains 7 questions from a mix of 1 subtopics.
The force that causes an object to fall towards the earth is:
Weight
The contact force
Air resistance
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The size of the air resistance is dependent on the object's ______.
velocity and weight
surface area and velocity
weight and surface area
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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
Decreases
Stays the same
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We say an object has reached 'terminal velocity' when it is falling with a _________ velocity.
increasing
constant
decreasing
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Terminal velocity is reached when:
(Select all that apply)
The weight has the same magnitude as the air resistance
The resultant force is zero
The air resistance is greater than the weight force
The velocity is zero
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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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