Question

A body travel's one round in a circle of radius R . What is the displacement and distance travelled?

Answer 1

Answer: Displacement is zero. Distance not zero.

Explanation:

Distance depends on radius of the circle.

Answer 2

Answer:

radius r

distance =circumference =2πr covered of a circle

displacement = path between initial and final point

•°•2t will equal to diameter r+ r= 2r

Distance = 1round =2πr

2round =2x2πr=4πr

2&half round = 0.5x4πr

Displacement = 1round =0

2round =0

2&half round = diameter of a circle = r+r=2r