Energy & Forces
What iss the ability to do work?
Energy
What are forces that occur when objects touch?
Contact forces
What is Newton's 1st Law?
An object in motion will stay in motion unless acted upon by an outside force
What is the change in position of an object called?
Displacement
What is any push or pull that causes movement?
Force
What is a force that acts at a distance?
Non-contact forces
What does Newton's 2nd Law state?
Force = mass x acceleration (F=ma)
What is it called when forces cancel each other?
Balanced forces
What is the movement of energy from one object to another?
Energy transfer
What are two examples of a non-contact force?
Gravity, magnetism, electricty
What is the formula for calculating force?
F = ma
What is the speed of an object and its direction?
Velocity
What is the energy of motion?
Kinetic energy (KE)
What is the force of gravity on an object?
Weight
What is Newton's 3rd Law?
For every action, there is an equal and opposite reaction
Define net force.
The sum of all the forces acting on a system
What is the potential energy determined by height?
Gravitational (potential) energy (GE)
What type of force keeps an object at rest?
Static friction
Provide an example of Newton's 2nd Law.
The harder a ball is hit, the faster it will move.
OR
The bigger ball you hit, the more force you will need to move it the same distance.
How does unbalanced force affect an object's motion?
It changes the direction of motion