PH-967

Conservation of energy

Physics · Secondary 3 · Hard · Conservation of energy

A 0.20 kg ball is dropped from rest from a height of 8.0 m above the ground. Ignore air resistance.

What is the speed of the ball just before it hits the ground?
(Take gravitational field strength,

g = 10\,\text{N kg}^{-1}

$8.0\,\text{m s}^{-1}$
$12.6\,\text{m s}^{-1}$
$16.0\,\text{m s}^{-1}$
$4.0\,\text{m s}^{-1}$

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