Question

wwhat is meant by acceleration

Answer 1

acceleration is the rate of change of velocity of an object with respect to time. An object's acceleration is the net result of any and all forces acting on the object, as described by Newton's Second Law. The SI unit for acceleration is metre per second squared (m s−2).

Answer 2

Acceleration: acceleration of a body is defined as the change in velocity per unit time.
OR,
acceleration of a body is defined as the rate of change of velocity of the object.