The same retarding force is applied to stop a train. The train stops after 80 m. If the speed is doubled, then the distance will be

The same

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Doubled

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Halved

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Four times

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Solution

The correct option is D
Four times

Stopping distance $S \infty u^{2}$ . If the speed is doubled then the stopping distance will be four times.

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The correct option is D Four times Stopping distance S∞u2 . If the speed is doubled then the stopping distance will be four times.

The correct option is D
Four times

Stopping distance $S \infty u^{2}$ . If the speed is doubled then the stopping distance will be four times.