Definitions and facts
What is energy?
The ability to cause change.
Is a stationary sandwich EP or EK?
EP
Is a boulder falling EK or EP
Simple answer: EK (From early in the unit)
New answer: EP and EK (From later in the unit)
What is potential energy?
Stored energy.
How do you solve for potential energy?
Mass (Kilograms) * Gravity * Height
or
Weight (Newtons) * Height
Is a stretched rubber band EP or EK?
EP
What is kinetic energy?
Energy in the movement of an object.
What is the acceleration of gravity?
9.8m/s^2
What is the potential energy of a 13N object that could fall 3.5m?
45.5j
How much kinetic energy (max) could you get from potential energy (max) in a non-friction environment?
The amount of potential energy you started with.
What is energy measured in?
Joules (j)
What is the potential energy of a 2kg object that could fall 10m?
196j
How does energy turn into thermal energy?
Friction (Or Air Resistance).
How do you solve for kinetic energy?
1/2 mass * velocity^2
What is the kinetic energy of a 4kg weight being dropped at a velocity of 3mps.
18j