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 at a constant velocity unless acted upon by a net external force.

Front

Define inertia.

Back

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

Front

What is the formula to calculate force?

Back

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

Front

If a car is moving at a constant velocity, what is the net force acting on it?

Back

0 N, because the car is already in motion and there is no net external force acting on it.

Front

What does it mean if an object has more mass in terms of inertia?

Back

An object with more mass has greater inertia, meaning it will resist changes to its motion more than an object with less mass.

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.

Front

How do you calculate the net force when multiple forces are acting on an object?

Back

Net force is calculated by adding all the forces acting on the object, taking into account their directions.

Front

What is the significance of the direction of force in Newton's laws?

Back

The direction of force determines the direction of acceleration and motion of the object.

Front

What is an example of inertia in everyday life?

Back

When a car suddenly stops, passengers lurch forward due to inertia.

Front

Which has more inertia: a toddler or a cruise ship?

Back

A cruise ship has more inertia because it has a greater mass.