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:
Air resistance
The contact force
Weight
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The size of the air resistance is dependent on the object's ______.
velocity and weight
weight and surface area
surface area and velocity
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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.
increasing
decreasing
constant
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Terminal velocity is reached when:
(Select all that apply)
The velocity is zero
The air resistance is greater than the weight force
The weight has the same magnitude as the air resistance
The resultant force 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:
Decelerating
Stationary
Accelerating
At constant velocity
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