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Review of Newton's Laws of Motion

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Questions and Answers

What is Newton's First Law of Motion?

Mass is a measure of how much matter is present in an object

For every action there is an equal and opposite reaction

Force is equal to mass times acceleration

An object at rest stays at rest, and an object in motion stays in motion (correct)

What is the meaning of mass in an object?

The weight of an object

The force acting on an object

The acceleration of an object

A measure of how much matter is present in an object (correct)

Which of Newton's Laws is most useful for finding mass and weight?

Newton's First Law

Newton's Second Law (correct)

Newton's Third Law

All of the above are equally useful

What can change the mass of an object?

Adding or removing matter from the object Signup and view all the answers

What is necessary to solve for mass using Newton's Second Law?

The force and acceleration of the object Signup and view all the answers

What is the unit used to measure force?

Newtons Signup and view all the answers

According to Newton's Third Law, what happens when a force is applied?

An equal and opposite reaction is generated Signup and view all the answers

Why do people weigh less on the Moon than on Earth?

Because the gravity on the Moon is weaker than on Earth Signup and view all the answers

What is the difference between mass and weight?

Mass is the amount of matter, while weight is the force of gravity Signup and view all the answers

Why does the twin at the Dead Sea weigh more than the twin on Mount Everest?

Because the gravity is stronger at the Dead Sea than on Mount Everest Signup and view all the answers