What is negative acceleration?

cbse
cbse-class-9-science
motion

#1

What is negative acceleration?

Answer:
If the velocity of a body decreases with time, then its final velocity is less than the initial velocity and thus its acceleration is negative. Negative acceleration is called retardation or deceleration. For example, when brakes are applied to a moving truck, its velocity gradually decreases. In other words, it is under retardation.