Question

Assertion (A): It is not possible to have constant velocity and variable acceleration. Reason(R): Accelerated body cannot have constant velocity.

The acceleration of an object is said to be uniform acceleration if its velocity changes by equal amount in equal interval of time, however small these time intervals may be. A particle is moving with uniform acceleration in x-direction, the displacement x of particle varies with time t as x = 4t2-15t+25 m