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 unit of force?

Back

The unit of force is the Newton (N).

Front

How does mass affect acceleration according to Newton's Second Law?

Back

According to Newton's Second Law, as mass increases, acceleration decreases if the same force is applied. This means heavier objects require more force to achieve the same acceleration as lighter objects.

Front

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

Back

The relationship is defined by the equation F = ma, where F is force, m is mass, and a is acceleration.

Front

If a 10 kg object is accelerated at 2 m/s², what is the force applied?

Back

Using F = ma, the force is F = 10 kg × 2 m/s² = 20 N.

Front

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

Back

If the net force is doubled while the mass remains constant, the acceleration will also double.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. It is directly related to the mass of the object.

Front

How can forces change an object's motion?

Back

Forces can change an object's motion by altering its speed, direction, or both.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, measured in kilograms (kg), while weight is the force exerted by gravity on that mass, measured in Newtons (N).

Front

What is an example of Newton's Second Law in everyday life?

Back

Pushing a shopping cart: A full shopping cart requires more force to accelerate than an empty one due to its greater mass.