# Mini-Quiz: Equivalence of Inertial Mass and Gravitational Mass

by Ron Kurtus (updated 30 May 2023)

Take this Mini-Quiz to check your understanding of the lesson material.

1. What does Newton's Second Law of Motion imply?

Inertial mass is related to force and acceleration

Objects can move freely without a force

Action equals reaction

2. If you double the acceleration of an object, how would that affect its inertia mass?

The acceleration has no effect on the mass of the object

The mass would double, since it is proportionate to the acceleration

The mass would become gravitational mass, provided a = g

3. What happens when the separation of masses is the radius of the Earth?

The masses will repel each other

Mass increases

Gravitation acts like gravity

If you got all three correct, you are on your way to becoming a Champion in Physics. If you had problems, you had better look over the material again.

You can learn from performing experiments

## Resources and references

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Equivalence Principle - Laboratory Tests of Gravitational Physics

Equivalence principle - Wikipedia

Elevator, rocket, and gravity: the equivalence principle - Einstein online

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www.school-for-champions.com/science/
mini-quiz_gravitation_equivalence_inertia_mass.htm

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