Newton's Laws Review

Front

What is Newton's First Law of Motion?

Back

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

Front

What is the definition of net force?

Back

The vector sum of all the forces acting on an object.

Front

What is the normal force?

Back

The force exerted by a surface to support the weight of an object resting on it, acting perpendicular to the surface.

Front

What is friction?

Back

A force that opposes the relative motion of two surfaces in contact.

Front

What is gravitational force?

Back

The attractive force between two masses, commonly referred to as weight when considering the force acting on an object due to Earth's gravity.

Front

How does mass affect gravitational force?

Back

Gravitational force increases with mass; more massive objects exert a stronger gravitational pull.

Front

What is the relationship between acceleration and net force?

Back

According to Newton's Second Law, acceleration is directly proportional to net force and inversely proportional to mass (F=ma).

Front

What is the direction of frictional force?

Back

Frictional force acts in the opposite direction to the motion of the object.

Front

What happens to forces when an object is in equilibrium?

Back

The forces acting on the object are balanced, resulting in a net force of zero.

Front

What is the common unit of force?

Back

The Newton (N).