Question

A particle is moving in a circle of diameter 20m. What is its distance and as per the table
given below

Answer 1

1) For the round 1

The particle will be at the starting point so

displacement =0

Distance will be the circumference of the circle

distance = $2\pi r=2\times 3.14\times 10=62.8m$

2)For the round 1.5

The particle will be diametrically opposite so

displacement=20 m

Distance will be 1.5 times the circumference

distance = $1.5\times 2\pi r=1.5\times 2\times 3.14\times 10=94.2m$

3) After round 2

The particle will be at the starting point so

displacement=0

Distance will be 2 times the circumference

distance = $2\times 2\pi r=2\times 2\times 3.14\times 10=125.6m$

4)After 2.5 round

The particle will be diametrically opposite so

displacement=20 m

Distance will be 2.5 times the circumference

distance = $2.5\times 2\pi r=2.5\times 2\times 3.14\times 10=157m$