Question

A man of mass 50kg jumps from a height of 0.5m if g =10m/s square what will be his energy at the highest point ?

Answer 1

Energy= MGH
=50×10×0.5
=50×5
=250j
Hence, energy at the highest point is 250j

I hope it help you.

Answer 2

Given:

• Mass of man = 50 kg
• Height above ground= 0.5 metres
• gravity = 10 m/s².

To find:

• Energy at highest point ?

Calculation:

The energy of the men at the highest point will be equal to the addition of potential energy and the kinetic energy of the man.

$TE= KE + PE$

• Now , when the man jumps, his initial velocity is zero. So, his kinetic energy at that point will also be zero.

$\implies TE= 0 + (m \times g \times h)$

$\implies TE= mgh$

$\implies TE=50 \times 0.5 \times 10$

$\implies TE=250 \: Joule$

So, energy of the man at that point is 250 Joules.