Question

a particle is moving in a circular path of radius'r'the displacement after half a circle would be
a)0
b)pi×r
c)2r
d)2pi×r​

Answer 1

Explanation:

b)pi×r

..................

Answer 2

Answer:

C. 2r

Explanation:

Given, aftar half the circle, the particle will reach the diametrically opposite opint i.e., from point A to point B. And we know displacement is shortest path between initial and final point. Hence, the displacement aftar half circle is 2r.