Question

An eagle that has a mass of 4.5 kg is spotted 5 m above a lake. It flies up to its nest in a tree at a height of 25 m. How much gravitational potential energy did the eagle gain

Answer 1

The eagle gained 882 J of gravitational potential energy.

Answer 2

Answer:

The eagle gained 882 J of  gravitational potential energy.

Explanation:

Given that,

mass of an eagle = 4.5 kg

Initial height $h_{i} = 5\ m$

Final height  $h _{f} = 25\ m$

We need to calculate the gravitational potential energy gain

The gravitational potential energy is defined as,

$E = mgh$

Change the gravitational potential energy is

$\Delta E= mgh_{f}-mgh_{i}$

Put the value in to the formula

$\Delta E = 4.5\times9,8\times(25-5)$

$\Delta E = 4.5\times9,8\times20$

$\Delta E=882\ J$

Hence, The eagle gained 882 J of  gravitational potential energy.