If a projectile crosses two walls of equal height `h` symmetrically as shown in the fig.Choose the correct statement (s) `(g=10m//s^(2))`

Options

A. The time of flight in 8sec
B. The height of each wall is 60m
C. The maximum height of projectile is 80m
D. all of the above

Answer

d

Explanation

`t=6+2=8` sec
`h=(g)/(8)(8^(2)-4^(2))`