Newton's Laws Review

Front

What is the net force?

Back

The net force is the overall force acting on an object when all the individual forces are combined. It determines the object's acceleration.

Front

What law of motion does this picture represent?

Back

Newton's 2nd law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

Front

A car of mass 15kg is travelling east at a velocity of 3m/s. What is the value of its momentum?

Back

The momentum (p) is calculated using the formula p = mass × velocity. Therefore, p = 15kg × 3m/s = 45kg.m/s.

Front

What does Fn stand for?

Back

Fn stands for Force normal, which is the force exerted by a surface to support the weight of an object resting on it.

Front

Is it true that mass is a measure of an object's inertia?

Back

True. Mass is a measure of the amount of matter in an object, and it determines the object's resistance to changes in motion.

Front

What is Newton's 1st law of motion?

Back

Newton's 1st law states that an object at rest will remain at rest, and an object in motion will remain in motion at a constant velocity unless acted upon by a net external force.

Front

What is the formula for calculating force?

Back

The formula for calculating force is F = m × a, where F is force, m is mass, and a is acceleration.

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

What is the relationship between mass and acceleration according to Newton's 2nd law?

Back

According to Newton's 2nd law, for a given force, an increase in mass results in a decrease in 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).