Question

A girl moves along the boundary of a square field of side 20m in 80s what will be the magnitude of displacement at the end of 200s. Also calculate average velocity thanks

Answer 1

no of rounds = 200/80 = 2.5
the ending point with respect to starting point is exactly opposite
displacement=diagonal of square
displacement= root 2 * side
displacement= 20root2 m
average velocity = total displacement/total time
average velocity = 20 root2/200=root2/10 m/s

Answer 2

Answer:

yashushiva's answer is right