Question

A 5kg stone is thrown vertically upwards with a speed of 10m/s. Find the potential energy at the greatest height

Answer 1

$max \: height = \frac{ {u}^{2} }{2g} \\ = \frac{100}{20} = 5 \\ so \: height = 5m \\ potential \: energy = mgh \\ = 5 \times 10 \times 5 = 250$
so potential energy =250
(I HAVE TAKEN g as 10 m/s2