Respuesta :

Hi There Buddy!

Lets make use of the equations of motion to solve this problem.

We know time of flight is 2u/g

===> 2u/10 = 20 =====> u = 100 m/s

Now, we know the initial velocity, we have to find the maximum height.

H = (u^2)/2g = 10^4 / 20 = 500 m

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