Question

A boy rolls a rubber ball on a wooden surface. The ball travels a
short distance before coming to rest. To make the same ball travel
longer distance before coming to rest, he may
(a) spread a carpet on the wooden surface.
(b) cover the ball with a piece of cloth.
(c) sprinkle talcum powder on the wooden surface.
(d) sprinkle sand on the wooden surface.


NCERT Class VIII
Science - Exemplar Problems

Chapter 12. Friction

Answer 1

(c) sprinkle talcum powder on the wooden surface.

Answer 2

The answer is:(c).................................