Physics Semester Exam

Front

What is Newton's 1st Law of Motion?

Back

An object at rest will stay at rest, and an object in motion will stay in motion at a constant velocity unless acted upon by a net external force.

Front

What do arrows represent in force diagrams?

Back

Forces acting on an object.

Front

What is a free-body diagram?

Back

A diagram that shows all the forces acting on an object.

Front

What does Newton's 2nd Law state?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

Front

What is Newton's 3rd Law of Motion?

Back

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

Front

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

Back

It continues to move at a constant velocity.

Front

What is the significance of the term 'free' in free-body diagram?

Back

It indicates that the diagram represents all forces acting on the object without any constraints.

Front

How does air resistance affect a falling object?

Back

Air resistance opposes the motion of the object, reducing its acceleration.

Front

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

Back

Force equals mass times acceleration (F=ma).

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.