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

spread a carpet on the wooden surface.

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cover the ball with a piece of cloth.

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sprinkle talcum powder on the wooden surface.

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sprinkle sand on the wooden surface.

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Solution

The correct option is C sprinkle talcum powder on the wooden surface.
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.

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Q. 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.
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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

The correct option is C sprinkle talcum powder on the wooden surface.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.

The correct option is C sprinkle talcum powder on the wooden surface.
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.