Forces and motion

The change in an object’s position relative to a reference point over time. Defined by velocity, acceleration, and displacement.

Motion

A non contact, attractive force between any objects with mass

Gravitational force

A perpendicular support force exerted by a surface on an object pressing against it

Normal force

A push or pull upon an object

Force

The force that acts in the opposite direction of motion

Frictional force

Force transmitted through a string, rope, cable, or wire when it is pulled by forces acting from opposite ends

Tension force

A force that is applied to an object directly by a person or another object

Applied force

A force exerted by a compressed or stretched string upon any object that is attached to it

Spring force

A non contact force of attraction or repulsion created by a moving electric charges and magnetic fields

Magnetic force

A special type of frictional force that acts upon objects as they travel through the air, often opposing the motion of an object

Air resistance

The attractive or repulsive force between two electrically charged objects

Electrostatic force

Forces that are equal in size and opposite in direction, resulting in a neg force of zero and no change in an object’s motion

Balanced forces

Forces that are not equal in magnitude or opposite in direction, resulting in a net force greater than zero and a change in an object’s motion

Unbalanced forces

A change in velocity

Acceleration

The speed of an object in a specific, given direction

Velocity

The sum of all forces acting on an object

Net force

The straight line distance and direction from an object’s starting and final position

Displacement