8/9-Newton's Laws and Related Concepts

Front

Definition of Newton's 1st Law

Back

An object at rest, tends to stay at rest; while an object in motion tends to stay in motion unless a force is applied.

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Example of Newton's 1st Law

Back

A soccer ball does not move until it is kicked. It then continues to move until a person, a goal net, and/or friction stop it.

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Definition of Newton's 2nd Law

Back

The force of an object (or applied to an object) is equal to the object's mass times its acceleration. F = ma

Front

Example of Newton's 2nd Law

Back

If they are accelerating at the same rate, a massive 18-wheeler truck will cause more damage than a small Volkswagen car when each of them hits another vehicle because the truck hits with more force.

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Definition of Newton's 3rd Law

Back

For every action, there is an equal and opposite reaction (that occurs simultaneously).

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Example of Newton's 3rd Law

Back

When a swimmer pushes backwards against the wall of the pool, the wall applies a force on the swimmer causing him to move forward through the water.

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Speed

Back

Distance divided by time

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Distance

Back

Speed times time

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Inertia

Back

The tendency of an object to resist a change in motion

Front

Frame of Reference

Back

A system of objects that are not moving with respect to one another