Conservation Of Energy

Question 1

State the principle of conservation of energy (2)

Answer 1

1.Energy can not be created or destroyed. It can only be transferred.
2. If one energy store decreases, then another energy store must increase in time.

Question 2

For an object falling through the air, explain why the change in KE will be less than the change in GPE?

Answer 2

As the object falls, work is being done by drag.