Question

when do you say that object as a positive acceleration and negative acceleration

Answer 1

when the vilocity of an object increases randomly is called acceleration when the vileocity of an object decreases randomly is called retardatio

Answer 2

The ratio of change in velocity with time is know as acceleration. If a body moves with acceleration in the direction of the body, the body is said to be having positive acceleration. If a body is moving and suddenly stops the acceleration acts in the direction opposite to the direction of the body. This causes negative acceleration known as deceleration