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Lakhmir Singh Solutions Class 9 Physics Solutions for Exercise in Chapter 1 - Motion

Question 79 Exercise

A bus running at a speed of 18 km/h is stopped in 2.5 seconds by applying brakes. Calculate the retardation produced.

Answer:

Initial velocity, u = 18 km/h = 5 m/s

Final velocity, v = 0 m/s

Time, t = 2.5s

Retardation = 2 \mathrm{m/s^2}

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