Forces Flashcard

Front

What is Newton's first law of motion?

Back

An object at rest stays at rest, and an object in motion continues in motion with the same speed and in the same direction unless acted upon by a net external force.

Front

What is friction?

Back

Friction is a force that opposes the relative motion of two surfaces in contact.

Front

What is the unit of force?

Back

The unit of force is Newtons (N).

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object, typically measured in meters per second squared (m/s²).

Front

What is a free-body diagram?

Back

A free-body diagram is a graphical representation used to visualize the forces acting on an object.

Front

What is a vector quantity?

Back

A vector quantity is a physical quantity that has both magnitude and direction.

Front

What is a scalar quantity?

Back

A scalar quantity is a physical quantity that has only magnitude and no direction.

Front

What is the relationship between force, mass, and acceleration?

Back

According to Newton's second law, force equals mass times acceleration (F = ma).

Front

What is gravitational force?

Back

Gravitational force is the attractive force between two masses, such as the force that pulls objects toward the Earth.

Front

What is the difference between internal and external forces?

Back

Internal forces act within a system, while external forces act on the system from outside.