Question

what is constant acceleration​

Answer 1

Constant acceleration means a horizontal line for the acceleration graph. The acceleration is the slope of the velocity graph. Constant acceleration = constant slope = straight line for the velocity graph. The area under the acceleration graph is the change in velocity

Answer 2

In case the velocity of the body increases or decreases by he same amount or magnitude of velocity in equal interval of time and the direction of motion of the body does not change. The say the body has constant acceleration .