A child's spring gun when fired vertically sends the ball to a height h, starting with a launch velocity. The same gun is used on the moon and the ball starts with a velocity v' and used to height h'. Then

Options

A. `h gt h', v' gt v`
B. `h' gt h, v' gt v`
C. `h' = h, v' lt v`
D. `h' = h', v' gt v`

Answer

`(2)`

Explanation

`h = (v^(2))/(2g)` on earth
`h. = (u^(2))/(2(g/6))` on moon [`therefore g. = g/6]` on moon
`therefore h. gt h`