A bus decreases its speed from 80 km h-1 to 60 km h-1 in 5 s. Find the acceleration of the bus.

Asked by Vishal kumar | 1 year ago |  279

1 Answer

Solution :-

Given, the initial velocity (u) = 80km/hour = \( \frac{80,000m}{3600s}=22.22\,m.s^{-1}\)

The final velocity (v) = 60km/hour \(= \frac{60,000m}{3600s}=16.66\,m.s^{-1}\)

Time frame, t = 5 seconds.

Therefore, acceleration (a) \( =\frac{v-u}{t}\) \( =\frac{16.66\,ms^{-1}-22.22\,m.s^{-1}}{5s}\)

\( =-1.112\,m.s^{-2}\)

Therefore, the total acceleration of the bus is \(-1.112\,m.s^{-2}\). It can be noted that the negative sign indicates that the velocity of the bus is decreasing.

Answered by Vishal kumar | 1 year ago

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