Asked by sim

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?
Answered by Steve
(a) K = 1/2 mv^2 - you have the numbers. plug 'em in

(b) PE = KE

(c) s = v^2/2a
Answered by sim
WHAT does "a" stand for?
Answered by poop
pefvghfh
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