P3g-Falling Safely Flashcards by Julia Trinidad

Q

What do frictional forces do?

A

act against the movement
lead to energy loss and inefficiency
can be reduced(shape,lubricant)

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Q

What are some frictional forces?

A

Drag
Friction
Air resistance

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Q

What does higher speed mean?

A

More drag

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Q

What does a larger area mean?

A

More drag

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Q

What does weight or driving force equal when travelling at terminal speed?

A

Drag

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Q

Describe gravitational field strength or acceleration due to gravity

A

is unaffected by atmospheric changes
varies slightly at different points on the earths surface
will be slightly different on top of a mountain or down a mineshaft

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