A train starting from Railway Station attains a speed of 21 m s in one minute. Find its acceleration.

The acceleration is given by, a = v - u t . Where, a = acceleration of the body , v = final velocity of the body , u = initial velocity of the body , t = time taken for change in velocity . For a train, it is given that, The initial velocity, u = 0 m s . The final velocity, v = 21 m s . The time taken, t = 60 s . Therefore, acceleration, a = v - u t ⇒ a = 21 - 0 60 ⇒ a = 0.35 m s 2 Thus, acceleration of a train, a = 0 .35 m s 2 .

Acceleration ( a ) is the rate of change in velocity ( Δ v ) over the change in time ( Δ t ), a = Δ v Δ t . The acceleration is a vector quantity with a SI unit of m s - 2 .

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SI unit of measurement of acceleration is _________.

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Science>Physics>Equations of Motion>Acceleration

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