Forces and Motion - Unit Test

Speed

The distance traveled per unit of time.

Time

The duration in which events occur, measured in seconds, minutes, etc.

Displacement

The change in position of an object, measured as a straight line from the starting point to the final position.

Distance

The total length of the path traveled by an object, regardless of direction.

Reference Point

A stationary object or location used to determine the position of another object.

Friction

The force that opposes the motion of an object in contact with a surface.

Balanced Forces

Forces that are equal in size and opposite in direction, resulting in no change in motion.

Unbalanced Forces

Forces that are not equal and opposite, causing a change in the motion of an object.

Gravitational Forces

The attractive force between two masses, dependent on their masses and the distance between them.

Net Force

The overall force acting on an object, calculated by combining all individual forces.

Mass

The amount of matter in an object, typically measured in kilograms.

Acceleration

The rate of change of velocity of an object over time.

Force

A push or pull acting on an object, measured in Newtons.

Newton's First Law of Motion

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Newton's Second Law of Motion

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

Newton's Third Law of Motion

For every action, there is an equal and opposite reaction.

Independent Variable

The variable that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

Dependent Variable

The variable being tested and measured in a scientific experiment.