Question

Define acceleration and state it's SI unit. for motion along a straight line, when do we consider the acceleration to be ( a) positive (b) negative​

Answer 1

Answer:

Change in velocity of an object in a particular interval of time is called acceleration.

SI unit is m/s^2

in a straight line acceleration is mainly considered positive.

Explanation:

HOPE THIS HELPS

MARK IT BRAINLIEST AND FOLLOW ME

THANK U

Answer 2

Explanation:

acceleration is the rate of change of velocity....SI unit ---- m/s sq.

when velocity of the body is increasing per unit time...acceleration is positive..

..

when this is slowing down then it is negative....