Energy 1
What is force?
A push or a pull
What is potential energy?
The stored energy of an object.
What is normal force?
Force of the ground pushing up against gravity.
What is Newton's 1st Law?
An object at rest will stay in rest. An object in motion will stay in motion unless it is acted upon by an outside force.
What is energy?
The ability to do work or cause change.
Fill in the blank:
The ___________ an object, the more potential energy.
The __higher__ an object, the more potential energy.
What is kinetic energy?
The energy an object has due to its motion
What is Newton's 3rd Law?
For every action there is an equal and opposite reaction.
Do both potential and kinetic energy relate to light or motion?
Motion
What is potential energy dependent on?
Potential energy is dependent on position and mass.
What is kinetic energy dependent on?
Kinetic energy is dependent on speed and mass.
What is Newton's 2nd Law?
Force = mass * acceleration
What is net force?
The sum of all forces acting on an object.
Which has the most potential energy?
(A) A truck sitting at the top of a hill or
(B) A truck speeding down the hill?
A- A truck sitting at the top of a hill
If two objects are moving at the same speed (velocity), the object with the most ________ will have the most kinetic energy.
Mass
What is an unbalanced force?
Not equal in strength. Can cause an object to speed up, slow down, stop, or change direction.
The object will move in the direction the greatest force is going.
What does the Law of Conservation of Energy/Matter state?
Energy can NEVER be created or destroyed. Only transferred from one form to another.
What are the types of Potential Energy?
Chemical, Gravitational, and Elastic
What are the types of Kinetic Energy?
Sound, Thermal, Electrical, Mechanical, and Radiant (light)
What is a balanced force?
Equal in strength but opposite in direction. Does not change the motion of an object.