Question

define with examples positive acceleration , negative acceleration , zero acceleration .​

Answer 1

Answer:

Positive acceleration means acceleration in the direction of velocity ( it always increases the speed of particle). Negative acceleration means acceleration opposite to the direction of velocity ,it is also known as retardation (it always decreases the speed of the particle).

Explanation:

Answer 2

Explanation:

positive acceleration means that acceleration is increasing

negative acceleration means acceleration is decreasing

zero acceleration means velocity is constant ..

addition information

if initial velocity and acceleration sign is same the acceleration get increase

if sign are opposite then acceleration get decreased