Question 7
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.

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Solution

(c) sprinkle talcum powder on the wooden surface.

The talcum powder when sprinkled on the wooden surface, the surface becomes smoother which allows the ball to travel a longer distance.

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Standard XII Physics

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(c) sprinkle talcum powder on the wooden surface. The talcum powder when sprinkled on the wooden surface, the surface becomes smoother which allows the ball to travel a longer distance.

(c) sprinkle talcum powder on the wooden surface.

The talcum powder when sprinkled on the wooden surface, the surface becomes smoother which allows the ball to travel a longer distance.