Question

In Tour de France cycling competition, the cyclists have helmets that are pointed
in front and flat on the back.
Explain how the shape of these helmets facilitates the competitors.
A. Friction results in the loss of energy in the form of heat.
B. Friction can be reduced by increasing irregularities on the surfaces in contact.
C. Use of lubricants in door hinges can help in decreasing squeaky noise
as well as in increasing friction.
D. Bodies of fish are designed to increase friction so that they can swim efficiently.
E. Frictional force acts in the direction opposite to that of motion.

Answer 1

Explanation:

B is the correct option.

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