friction Flashcards
1
Q
friction always _______ motion
A
opposes
2
Q
useful friction equals to
A
grip and brake
3
Q
unwanted firction equal
A
air resistance
water resistance
and friction burns
4
Q
how could you reduce friction on objects
A
lubrication and streamlining
5
Q
characteristics of a streamlined shape are
A
a rounded front
slowly tapering tail
smooth shape with no projections
