The driver of a running train applies brakes so as to stop the train at a railway platform. The acceleration of the train is negative.

True

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False

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Solution

The correct option is A True
Acceleration:
When the velocity of an object changes with respect to time. It is called acceleration.
$A c c e l e r a t i o n = \frac{v e l o c i t y}{t i m e}$
SI unit of acceleration is m/s.
Deceleration:
When the velocity of a body decreases with respect to time, then it is termed as deceleration.
Deceleration is the negative of acceleration. It is also called retardation.
Deceleration comes into action when the brakes are applied to stop or reduce the velocity.
Hence, the given statement is true.

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