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:
The contact force
Air resistance
Weight
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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:
Stays the same
Increases
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 air resistance is greater than the weight force
The weight has the same magnitude as the air resistance
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If a ball is dropped from a plane and has not yet reached terminal velocity, then the ball must be:
Decelerating
Accelerating
At constant velocity
Stationary
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