Physics - Newton's Second Law

Front

What is Newton's Second Law of Motion?

Back

Newton's Second Law states that the force acting on an object is equal to the mass of that object multiplied by its acceleration (F = ma).

Front

How do you calculate force using Newton's Second Law?

Back

Force (F) is calculated by multiplying mass (m) by acceleration (a): F = m × a.

Front

What is the unit of force in the International System of Units (SI)?

Back

The unit of force is the Newton (N).

Front

What is the unit of mass in Newton's Second Law?

Back

The unit of mass is kilograms (kg).

Front

If a 5 kg object accelerates at 10 m/s², what is the force applied?

Back

50 N (calculated as F = m × a = 5 kg × 10 m/s²).

Front

What happens to the force required if the mass of an object increases while keeping acceleration constant?

Back

The force required increases because force is directly proportional to mass (F = ma).

Front

If a car with a mass of 1000 kg accelerates at 3 m/s², what is the net force?

Back

3000 N (calculated as F = m × a = 1000 kg × 3 m/s²).

Front

What is the relationship between force, mass, and acceleration?

Back

Force is directly proportional to both mass and acceleration; increasing either will increase the force.

Front

What is the acceleration of a 2 kg object if a force of 10 N is applied?

Back

5 m/s² (calculated as a = F/m = 10 N / 2 kg).

Front

What does it mean if an object has a net force of zero?

Back

If the net force is zero, the object is either at rest or moving at a constant velocity (no acceleration).