Question

In which of the following cases is the displacement zero?

• A. When displacement and distance traveled are equal
• B. When the object is travelling in a straight line
• C. If there is a unique path between two points
• D. If an object starts mowing from point $A$ and comes back to $A$ an a circular path

Answer 1

Answer: (D)

If an object starts mowing from point $A$ and comes back to $A$ an a circular path

The displacement is defined as vector quantity and it depends on both the position as well as direction.

In a circular motion when the body comes back to the original position then the displacement of the body is shortest distance between the final and the initial position of object.

So the displacement is zero.