Question

answer the following questions
I why is eneagy required for the​

Answer 1

Answer:

A source of energy is required to do work. More power is required while slowly lifting a box than whilelifting it up quickly. Work is done when the form of energy changes. ... Without friction or work by an external force, the sum of thepotential and kinetic energies of a body is constant.

Answer 2

Explanation:

Explanation:We need energy to perform the various activities such as cooking, providing heat and light, drive vehicles and machinery in industries. ... Energy can be generated from conventional sources such as coal, petroleum, natural gas, firewood, and cattle dung as well as non-conventional sources such as solar energy, wind energy.