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?

Homework Equations




The Attempt at a Solution

 

Answers and Replies

  • #2
ehild
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Homework Statement


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

Homework Equations




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?
 
  • #3
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.
 
  • #4
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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