Focus and Energy Flashcards
Momentum
the product of an objects mass and velocity
Acceleration
The rate at which velocity changes
Velocity
Speed in a given direction
Gravity
The attractive Force between objects; the force that moves objects downhill
Force
A push or pull exerted on a object
Friction
The force that two surfaces exert on each other when they rub against each other.
Newton’s First Law
An object that is at rest will stay at rest until an unbalanced force hits it. An object that is moving will stay moving until acted by an unbalanced force. (Inertia)
an object either remains at rest or continues to move at a constant velocity, unless acted upon by a force.[2][3]
Newton’s Second Law
The smaller the mass the greater acceleration when force is applied. The greater the force applied to an object, the greater the acceleration.
In an inertial reference frame, the vector sum of the forces F on an object is equal to the mass m of that object multiplied by the acceleration a of the object: F = ma.
Newton’s Third Law
For every action, there is an equal and opposite reaction.
When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body.
Centripetal Force
Force that causes an object to move in a circle
Potential Energy
The energy that an object has because of its position
Kinetic Energy
Energy that is moving
Acceleration
The rate at which velocity changes
Deceleration
Reduction in speed or rate
Positive and Negative G Forces
Increases apparent weight of body
Negative when you accelerate downward faster than the rate of natural free fall.
