What two factors determine the amount of KE an object has?
Mass and speed (velocity) of the object
Form of energy that is caused by the vibrations of particles in a medium.
What is Sound energy?
What two factors affect how much PE an object has?
Height above the ground and the mass.
Why does an object have potential energy?
What is it is due to its position and its mass?
Unit of measurement for PE and KE (spelling counts!!!!)
Joules
If a ball is standing still it has at 50 m above the ground and an apple is standing still at 75 cm above the ground. Which has more PE? (assume the have the same mass)
What is the Ball?
Law that states that energy cannot be created or destroyed, but it can be transformed into other forms of energy?
Law of Conservation of Energy
If a ball is rolling at 2 m/s. per second and it is 1 kg. What is the Kinetic energy?
What is KE= 2 J?
What type of electric circuit is considered to be more reliable because it has multiple paths for current to travel through?
Parallel Circuit
Energy locked in the nucleus of an atom.
Nuclear Energy
Name two types of potential energy.
What is elastic potential energy and gravitational potential energy? (chemical, nuclear, mechanical)