Question

A body travels in a semicircular path of radius 10 m starting it's motion from point. A to point B. Calculate the distance and displacement

Answer 1

distance=1/2×22/7×r
=1/2×22/7×10
=15.7m
displacement =2r
=2×10
20m

Answer 2

Given:

radius = 10m

To Find:

• distance
• displacement

Solution:

Distance will be the circumference of the semicircular path.

d = 2 π R / 2

d = π R

d = 3.14 * 10

d = 31.4 m

Displacement will be the shortest path i.e, diameter of the semicircular path.

displacement = 2 * R = 2 * 10 = 20m

So, the distance is 31.4 m and the displacement is 20 m