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Check your knowledge! Take our fun quiz for the Friction Section of the Tennis Chapter of our textbook! Follow the instructions and then click on the "Check it!" button for each question.

Intermediate Activities: Friction

1.	Friction is resistance to motion between two objects that rub against one another. (Check the correct answer.)
	True False

2.	The friction between two moving objects can be affected by the surfaces of the objects. (Check the correct answer.)
	True False

3.	When air flows across a surface like a tennis ball or an air- plane's wing, there is friction resisting the motion. How much friction is dependent on _______ factors. (Check the correct answer.)
	two three four

4.	If you poured a little water on a tennis ball, it will travel down more slowly than on a smooth ball. (Check the correct answer.)
	True False

5.	Because the surface is rougher, the friction force is stronger, the velocity is faster. (Check the correct answer.)
	True False

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