When you let go of an object, why does it fall towards to the ground?
Gravity exerts a force called weight on the object, which causes it to accelerate towards the earth, and so move downwards.
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What is terminal velocity?
Terminal velocity is the maximum velocity attainable by an object as it falls through a fluid (either a liquid or gas).
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What is the resultant force of an object falling at terminal velocity?
The resultant force of an object falling at terminal velocity is zero.
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What causes air resistance?
The force of air resistance is caused by a moving object colliding with particles in the air.
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Which two forces are in balance when a falling object reaches terminal velocity?
Weight and air resistance will balance (and so cancel each other out).
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Why do falling objects reach terminal velocity?
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What happens to weight and air resistance when a falling parachuter opens their parachute?
Their weight stays the same, but the air resistance increases.
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