Question

Rishi jogs in a cricket ground of circular path and makes 3 rounds. Distance and displacement of Rishi at the end of 3 rounds respectively are
1) 0, 0
2) 0, 3 x 2pi r
3) 3 x 2pi r, 3 x 2pi r
4) 3 x 2pi r, 0

Answer 1

sorry i dont know

if you have any doubts from 7th grade ask me

Answer 2

Given:

Rishi jogs in a cricket ground of circular path and makes 3 rounds.

To Find:

Distance and displacement of Rishi at the end of 3 rounds respectively

Solution:

Distance is the total length of the path covered.

For a circular path,

Distance traveled in 1 round = Circumference of the circle = 2 pi r

So, distance traveled in 3 rounds= 3 x 2 pi r

Displacement is the length of the shortest path between two given points.

Since in a circular path, the final position coincides with the initial, so displacement is zero.

Hence, the Distance and displacement of Rishi at the end of 3 rounds respectively are 3 x 2 pi r and 0.