Newton's Laws

Front

What happens when the forces on an object are balanced?

Back

The object is at rest or moving at a constant velocity.

Front

What is Newton's First Law of Motion?

Back

The Law of Inertia: An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

Which object is harder to stop once it's moving: a 120 kg ball or a 150 kg ball?

Back

The 150 kg ball is harder to stop due to its greater mass.

Front

What does 'equal and opposite reactions' refer to in Newton's Third Law?

Back

It refers to the principle that for every action, there is an equal and opposite reaction in terms of forces.

Front

What force does a chair apply to a person standing on it?

Back

The chair applies a normal force to support the weight of the person.

Front

Define inertia in the context of Newton's First Law.

Back

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

Front

What is the formula for calculating force according to Newton's Second Law?

Back

Force (F) = mass (m) × acceleration (a).

Front

How does mass affect the acceleration of an object when a constant force is applied?

Back

Greater mass results in less acceleration for the same applied force.

Front

What is the relationship between mass and weight?

Back

Weight is the force of gravity acting on an object's mass (Weight = mass × gravitational acceleration).

Front

What is an example of Newton's Third Law in action?

Back

When you push against a wall, the wall pushes back with an equal and opposite force.