Newton's Second Law

Front

What is Newton's Second Law of Motion?

Back

Newton's Second Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. It can be expressed with the formula: F = ma (Force = mass × acceleration).

Front

What is the formula to calculate force?

Back

The formula to calculate force is F = ma, where F is force, m is mass, and a is acceleration.

Front

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

Back

The unit of force in the SI system is the Newton (N).

Front

What does it mean if an object has a constant velocity?

Back

If an object has a constant velocity, it means that its speed and direction are not changing, resulting in an acceleration of 0 m/s².

Front

How does mass affect acceleration when a constant force is applied?

Back

According to Newton's Second Law, if a constant force is applied, an increase in mass will result in a decrease in acceleration.

Front

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

Back

The relationship is defined by Newton's Second Law: Force equals mass times acceleration (F = ma). This means that for a given mass, greater force results in greater acceleration.

Front

If a 2 kg object is accelerated at 6 m/s², what is the force applied?

Back

The force applied is 12 N, calculated using F = ma (F = 2 kg × 6 m/s²).

Front

What happens to the acceleration of an object if the net force acting on it is zero?

Back

If the net force acting on an object is zero, its acceleration is also zero, meaning it will either remain at rest or continue moving at a constant velocity.

Front

What is weight and how is it calculated?

Back

Weight is the force exerted by gravity on an object. It is calculated using the formula: Weight = mass × gravitational acceleration (W = mg).

Front

What is gravitational acceleration on Earth?

Back

The gravitational acceleration on Earth is approximately 9.81 m/s².