What is Newton's second law of motion?

Newton's Second Law: The rate of change of momentum is directly proportional to the net applied force and acts in its direction.

The famous equation: F = ma

• F = net force (N), m = mass (kg), a = acceleration (m/s²)
• Bigger force → more acceleration; bigger mass → less acceleration.

Derivation: F = d(mv)/dt = m(dv/dt) = ma