Newton's Laws Review

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. The more mass an object has, the more inertia it has.

Front

What is Newton's Second Law of Motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. This is often expressed as F=ma.

Front

What is Newton's Third Law of Motion?

Back

For every action, there is an equal and opposite reaction.

Front

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

Back

The greater the mass of an object, the less acceleration it will have when the same force is applied.

Front

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

Back

Force equals mass times acceleration (F=ma). This means that if you increase the mass while keeping the force constant, the acceleration decreases.

Front

What is the definition of weight?

Back

Weight is the force exerted by gravity on an object, calculated as the mass of the object multiplied by the acceleration due to gravity (W=mg).

Front

What is an example of an unbalanced force?

Back

A car accelerating when the driver presses the gas pedal is an example of an unbalanced force acting on it.

Front

What happens to an object in motion when no net force acts on it?

Back

It will continue to move at a constant velocity.

Front

What is the significance of the loaded truck having more inertia than the unloaded truck?

Back

The loaded truck requires more force to change its motion compared to the unloaded truck due to its greater mass.