Question

A farmer moves along the boundary of a square field of side 10 m in 40s. What will be the distance travelled in moving around the field and magnitude of displacement of the farmer at the end of 2 minutes 20 seconds.

1) 10 m, 10√2 m 

2) 140 m, 10√2 m 

3) 140 m, √2 m 

4) 120 m, √3 m

Answer 1

Correct option is 2) 140 m, 10√2 m