Physics Chapter 3

Front

What is a force?

Back

A push or pull on an object.

Front

What force acts on a free falling object?

Back

Force of gravity.

Front

What is the combination of all forces acting on an object called?

Back

Net force.

Front

Calculate the force of a cannonball with a mass of 0.5 kg and an acceleration of 10 m/sec².

Back

5 Newtons.

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.

Front

What is inertia?

Back

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

Front

What is momentum?

Back

The product of an object's mass and its velocity.

Front

What is the formula for calculating force?

Back

Force = Mass x Acceleration.

Front

What is the difference between action and reaction forces?

Back

Action forces are the initial forces applied, while reaction forces are the forces that occur in response to the action.

Front

What is gravitational force?

Back

The attractive force between two masses.