Vocabulary
Energy of motion
kinetic energy
The change in speed or direction of an object
Acceleration
the tendency of an object to stay in motion or at rest
Intertia
This noncontact force is always a pull and never a push
gravity
Which law is Force= mass x acceleration
Newton's second law
A change in an object's position in respect to time and in comparison to other objects
Motion
A force that opposes the motion of one object moving past another
Friction
Forces that act on an object without changing its motion. Often add up to zero
Balanced forces
If a force continues to act upon an object, it will move faster and faster. This increasing speed is called __________________.
Acceleration
Give examples of a noncontact force
Gravitational, Magnetic, Electrostatic
Potential energy
A push or a pull that causes an object to move, stop, or change direction
Force
Forces that do not add up to zero
Unbalanced forces
The _______________the _________, the greater the acceleration.
greater, force
Give examples of contact forces
Mechanical, Frictional, Spring
How fast an object's position changes over time
Speed
A noncontact force that acts over a distance and pulls all objects towards the center of the Earth
Gravity
The force between two magnets or between a magnet and certain metals.
Magnetic force
Which law states that an object in motion stays in motion or an object at rest stays at rest until an outside force acts upon it?
Newton's First law
Newton's third law always occurs in ______________
pairs
The ability to do work or to change an object
Energy
A force that occurs when one object touches another
Contact force
A push or a pull that one exerts on a system's state of rest or uniform motion
Mechanical force
Which law states that for every action, there is an equal and opposite reacxtion
Newton's Third law
Energy stored in an object is called___________
Potential energy