Question

30 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​

Answer 1

Answer:

c) sprinkle talcum powder

Explanation:

Because talcum powder will fill in the small irregularities in the surface and make it smoother, hence reducing friction

Answer 2

Answer:

To make the ball to roll over a longer distance, friction between the floor and the ball is to be reduced. Sprinkling talcum powder on the wooden floor will decrease the friction.