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, where F is force, m is mass, and a is acceleration.

Front

What unit is used to measure force?

Back

The unit used to measure 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 for a given force. This means that 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, which means that force equals mass times acceleration.

Front

If a 10 kg object is subjected to a force of 50 N, what is its acceleration?

Back

To find acceleration, use the formula a = F/m. Here, a = 50 N / 10 kg = 5 m/s².

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, according to Newton's Second Law.

Front

What is the effect of gravity on falling objects?

Back

Gravity causes falling objects to accelerate towards the Earth at approximately 9.81 m/s², regardless of their mass.

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 do you calculate the net force acting on an object?

Back

The net force is calculated by summing all the forces acting on an object, taking into account their directions.

Front

What is the formula for calculating weight?

Back

Weight is calculated using the formula W = mg, where W is weight, m is mass, and g is the acceleration due to gravity (approximately 9.81 m/s²).