Unit 3: Forces and Newton's Laws of Motion

Front

What is mass?

Back

Mass is how much matter is in an object.

Front

True or False: Your mass on Earth is the same on the Moon.

Back

True

Front

What is the standard unit of force?

Back

The standard unit of force is measured in Newtons.

Front

What does Newton's 1st Law state?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

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 does Newton's 3rd Law state?

Back

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

Front

Give an example of Newton's 1st Law.

Back

A book sitting on a table does not move unless someone pushes it.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is inertia?

Back

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

Front

What is the formula for calculating force?

Back

Force = mass x acceleration (F = ma).