Newton's Laws Conceptual Edit

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 Newton's Second Law of Motion?

Back

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

Front

What is Newton's Third Law of Motion?

Back

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

Front

Define 'net force'.

Back

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

Front

What is the formula for calculating weight?

Back

Weight (W) = mass (m) × gravitational acceleration (g).

Front

What is the role of frictional force?

Back

Frictional force opposes the motion of an object and acts parallel to the surface of contact.

Front

What is 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

How does mass affect acceleration when a constant force is applied?

Back

As mass increases, acceleration decreases when the same force is applied (a = F/m).

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

Explain the concept of action-reaction pairs.

Back

For every action force, there is a reaction force that is equal in size, but opposite in direction.