Question

Can an object be accelerated if it is with constant speed? If yes, explain giving examples.
1.When do you say that an object has
positive acceleration?
2.When do you say that an object has
negative acceleration?

Answer 1

When a body moves in circular path with constant speed but the direction of velocity changes at each point due to which an acceleration is produced that's why we can say that body is accelerating.

When a body moves in forward direction with increasing speed then acceleration will be positive

when the body moves in backward direction then acceleration will be negative.