5 - Work done and energy Flashcards
1
Q
What is the principle of the conservation of energy?
A
The principle of the conservation of energy states that energy cannot be created or destroyed.
2
Q
What is the equation for kinetic energy?
A
Eₖ = ½mv²
where v = speed, not velocity (all forms of energy are scalar)
3
Q
What is the unit for energy?
A
Joules (J)
4
Q
What is the equation for gravitational potential energy?
A
ΔEₚ = mgΔh
