Choose the correct statement:

Options

A. Unit of acceleration is `ms ^(-2)`
B. Speed = distance/ time .
C. if a body moves with unifrom elocity, its acceleration is zero.
D. All the above

Answer

D

Explanation

Unit of acceleration is ` ms ^(-2)`
(2) speed = `("distance")/("time")`
(3) As the body is moving with unifrom (constant) velocity ,i.e, there is no change in the velocity of body , and hence, acceletation of the body = zero