Question

A bus starts from rest and pick up a velocity of 90km/h in half minutes. Calculate the uniform acceleration of a bus in metre per second square

Answer 1

$\sf \huge \fcolorbox{red}{pink}{Solution :)}$

Given ,

• Initial velocity is 0
• Final velocity = 90 km/hr
• Time = 0.5 min

In terms of SI unit ,

• Initial velocity = 0 m/sec
• Final velocity = 90×(1000)/(3600) i.e 25 m/s
• Time = 0.5 × 60 i.e 30 sec

We know that ,

$\large \sf \fbox{Acceleration = \frac{Change \: in \: velocity}{Time} }$

Substitute the known values , we get

Acceleration = (25 - 0)/30

Acceleration = 0.83 m/s²

Hence , the uniform acceleration of a bus is 0.83 m/s²

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