A body is swinging on a swing such that his lowest and highest positions are at heights of 2 and 4.5 m respectivel. His velocity at the lowest position is

A body is swinging on a swing such that his lowest and highest positio

1.	A body is swinging on a swing such that his lowest and highest positions are at heights of 2 and 4.5 m respectivel. His velocity at the lowest position is
Answer» `2.5 ms^(-1)` `7 ms^(-1)` `14 ms^(-1)` `20 ms^(-1)` ANSWER :B