A stunt performer is to run and dive off a tall platform and land in a net in the back of a truck below. Originally the truck is directly under the plateform, it starts forward with a constant acceleration a at the same instant the performer leaves the plateform. If the platform is H above the net in the truck, then the horizontal velocity u that the performer must have as he leaves the platform is -

Options

A. `asqrt(2H//g)`
B. `asqrt(H//2g)`
C. `asqrt(g//2H)`
D. None of the above

Answer

2

Explanation

`(1)/(2)at^(2)=ut`
`u=(a)/(2)sqrt((2H)/(g))`
`u=asqrt((H)/(2g))`