Acceleration a = a m/sec^{2}

Initial speed u = 0 m/sec

Let the time be t_{1} sec.

From equation v = u + at

⇒ v = 0 + αt_{1}

Retardation a = – β m/sec^{2}

Initial speed ‘u’ is equal to the final velocity with acceleration ‘α’

= u = αt_{1} m/sec

Final velocity v = 0 m/sec

Let the time be t_{2} sec