Newton's Laws of Motion

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 unless acted upon by a net external force.

Front

What is the formula for calculating force?

Back

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

Front

What happens to the acceleration of an object if the mass is doubled while the force remains the same?

Back

The acceleration is cut in half.

Front

What is net force?

Back

The overall force acting on an object after all the forces are combined.

Front

If a book weighs 4 N and is held at rest, what is the net force on the book?

Back

0 N.

Front

What is the relationship between mass and acceleration when a constant force is applied?

Back

As mass increases, acceleration decreases.

Front

Which has a greater net force needed to move: a kilogram of feathers or a kilogram of iron?

Back

They need the same net force.

Front

What is inertia?

Back

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

Front

Give an example of Newton's Second Law of Motion in action.

Back

If you push a shopping cart, it accelerates based on how hard you push it and its mass.

Front

What is the effect of friction on motion?

Back

Friction opposes motion and can reduce acceleration.