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 is often expressed with the formula F=ma.

Front

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

Back

Acceleration can be calculated using the formula a = F/m, where F is the net force applied to the object and m is its mass.

Front

If a force of 200 N is applied to a 40 kg object, what is the acceleration?

Back

The acceleration is 5 m/s², calculated using a = F/m = 200 N / 40 kg.

Front

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

Back

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

Front

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

Back

The relationship is defined by Newton's Second Law: Force equals mass times acceleration (F=ma).

Front

What are the appropriate units to describe acceleration?

Back

The appropriate units to describe acceleration are meters per second squared (m/s²).

Front

What does acceleration measure?

Back

Acceleration measures the rate of change of velocity of an object.

Front

In what scenario does an object have zero acceleration?

Back

An object has zero acceleration when it moves at a constant velocity, such as a car with cruise control set at a constant speed.

Front

What is the formula to find the force applied to an object?

Back

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

Front

If an object with a mass of 6.0 kg accelerates at 4.0 m/s², what is the force applied?

Back

The force applied is 24 N, calculated using F = ma = 6.0 kg * 4.0 m/s².