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Kinematics problem

1. Homework Statement
Humpty Dumpty had a great fall from a roof. It took him 2.25s to fall. How high was the roof?

2. Homework Equations


3. The Attempt at a Solution
 

ehild

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1. Homework Statement
Humpty Dumpty had a great fall from a roof. It took him 2.25s to fall. How high was the roof?

2. Homework Equations


3. The Attempt at a Solution
:welcome:

The policy here is that you have to show your attempt at a solution. How does Humpty-Dumpty move? with constant velocity? Or does he accelerate?
 
It seems like a case of free-fall.
u=0,a=g and t is given
Use the equation H=ut+1/2at2
But this is what I presume.There isn't any clear information about the motion of Humpty Dumpty.
 
Thanks, I got it.

I used H=ut+1/2at2

but it seemed I was inputting the wrong digit to the calculator
 

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