Newton's Laws

Front

What is friction?

Back

Friction is a force that opposes the relative motion of two surfaces in contact.

Front

Friction acts in which direction relative to movement?

Back

Friction acts in the opposite direction of movement.

Front

What does an unbalanced force mean?

Back

An unbalanced force means that an object is changing its motion.

Front

What does 'Forces come in pairs' represent?

Back

This represents Newton's 3rd law of motion.

Front

What is Newton's 3rd law of motion?

Back

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

Front

What is the formula to calculate force?

Back

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

Front

If a net force of 15 N causes an object to accelerate at 5 m/s², what is the mass?

Back

m = 3 kg (using F = m × a, m = F/a).

Front

What is inertia?

Back

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

Front

What does Newton's 1st law state?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an unbalanced force.

Front

What is the relationship between mass and acceleration in Newton's 2nd law?

Back

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