When brakes are applied to a bus, the retardation produced is \( 25 \mathrm{cms}^{-2} \) and the...

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When brakes are applied to a bus, the retardation produced is \( 25 \mathrm{cms}^{-2} \) and the bus takes \( 20 \mathrm{~s} \) to stop. Calculate : (i) the initial velocity of bus, and (ii) the distance travelled by bus during this time.
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