CP Physical Science Forces Test 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 at a constant velocity unless acted upon by a net external force. This law is also known as the law of inertia.

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 with the formula F = ma.

Front

What is Newton's Third Law of Motion?

Back

For every action, there is an equal and opposite reaction. This means that forces occur in pairs.

Front

What happens to a ball rolling on a horizontal surface if there is no friction?

Back

The ball will keep rolling forever at the same speed.

Front

How does increasing the mass of an object affect its acceleration when force is constant?

Back

As the mass of an object increases, its acceleration decreases.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

Define force. What is its unit of measurement?

Back

A force is a push or pull on an object that can cause it to accelerate. The unit of measurement for force is the Newton (N).

Front

What is the relationship between mass and weight?

Back

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

Front

What is friction?

Back

Friction is a force that opposes the motion of an object. It acts parallel to the surfaces in contact.

Front

What is the formula for calculating acceleration?

Back

Acceleration (a) is calculated using the formula a = (final velocity - initial velocity) / time.