Newton's Laws
3
If 2 forces are applied on an object in the same direction, what would you do to the forces to find the net force?
Add the forces together
What is a force?
What is energy at rest?
Potential Energy
What is the ability to do work?
Energy
Newton's 3rd law states that for every action there is an equal and opposite what?
Reaction
If 2 forces are applied on the same object in opposite directions, what do you do to the forces to find the net force?
Subtract the forces
True or false: When forces are balanced, there is no motion.
True
What is energy in motion?
Kinetic energy
Walking is an example of what type of energy?
Kinetic energy
Newton's First Law of Motion is the Law of Inertia. What does this law say?
Any object in motion stays in motion and any object at rest stays at rest unless acted upon by a force
What is the unit of force?
Newton (N)
Is a person standing still an example of balanced or unbalanced forces?
Balanced Forces (Gravitational force and normal force balance each other out)
What kind of energy does a rock resting at the top of a hill have?
Potential energy
What is the relationship between mass, gravity, height, and potential energy?
These factors are directly proportional. As mass, gravity, or height increase, so does potential energy.
Newton's 2nd law of motion gives us the formula to calculate force. What is it?
Force = Mass x Acceleration
What is the formula to calculate force? (Hint: Think about Newton's 2nd law)
Force = Mass x Acceleration
What is the force that keeps us from floating off into space?
Gravity
What law states that energy cannot be created or destroyed?
Law of conservation of energy
What are the 2 factors related to kinetic energy?
Mass and velocity
Which law best explains why heavier objects require more force to be moved?
What is net force?
The sum of all forces acting on an object
What is the force that makes a ball eventually stop rolling?
Friction
What type of energy comes from the splitting of atoms?
Nuclear energy
Explain how potential and kinetic energy are involved in a roller coaster.
As the rollercoaster car goes up, it increases in potential energy. At the very top, the car has the most potential energy. As it falls downwards, the potential energy transforms into kinetic energy.