February 27, 2017

Homework Help: physics

Posted by sim on Friday, December 9, 2011 at 1:32pm.

a ball has a mass of 0.5kg dropped from a cliff top, the ball srtikes the sea below at a velocity of 10m/s.
(a)what is the kinetic energy of the ball as it strikes the sea?
(b) what was its potential energy before it was dropped?
(c)from what height was it dropped?

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