A diver is on a board 1.80 m above the water. She jumps straight up at 3.62 m/s. What is her maximum height above the water?

Question

anonymous · Answer

The Kinetic energy at the moment she jumps is 1/2 mv^2 .. right ?

anonymous · Answer

this is the equation for kinetic energy, but this is an energy problem

anonymous · Answer

attachment

anonymous · Answer

Wait man.. 
The potential energy of diver in air at maximum height = mgh (h = max.height)

anonymous · Answer

By conservation of mechanical energy, 
you have mgh = 1/2 mv^2
h = v^2/2g
   = (3.62^2)/(2*9.8)
   = 0.67 m

This is height above the board
Height above water = 0.67 + 1.80 
                             = 2.47 m
Got it ?? 
@DejohnetteW

anonymous · Answer

Yes! thank you so much!

anonymous · Answer

Welcome bro !

anonymous · Answer

can you help me again? A stone is dropped from a height of 7.70m. How fast is it going when it reaches the ground?