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in Physics by (65.0k points)

A car moving with a speed of 50 kmh-1 can be stopped by brakes after at least 6 m. What will be the minimum stopping distance, if the same car is moving at a speed of 100 kmh-1?

1 Answer

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Best answer

If final velocity is zero and acceleration is −ve then.

\(s = \frac{u^2}{2a}\)

\(s \propto u^2\)

So, if the velocity is doubled than stopping distance will become 22 = 4 = 6 × 4 = 24 m.

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