Question

What is acceleration? Write S.I units also define retardation.

Answer 1

acceralarate is rate of change in velocity
it's SI unit is m/ sec^2
retardation refers to the negative acceleration

Answer 2

rate of change in velocity is known as acceleration and it's S. I. unit is metre per second and negative acceleration is known as retardation.......... hope this will help you.... plz mark as brainielist