# Physics P2

-Forces and their effects

-Kenetic energy

-Electricity

-Atoms and radiation

-Life cycles of stars

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The Newton, N

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## What is air resistance?

-Friction

-Example: The faster a car moves, the more air resistance it gains.

-An object can avoid air resistance by being small and smoothed out

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## 5. What happens to a moving object if the resultan

It slows down in the direction of the resultant force

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8N

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2m/s^2

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Speed

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Acceleration

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## What does a horizontal line on a velocity time gra

Constant velocity

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## Whats thinking distance?

Thinking distance is the distance travelled between the need for braking and the brakes starting to act.

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## Whats breaking distance?

The distance taken to stop once the brakes have been applied

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-Drinking

-Drugs

-Distractions

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## In which direction does friction act?

In the opposite direction of movement

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## Vertical forces are balanced when...

It reaches terminal velocity

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## Elastic potential energy can be stored only when s

false, when it is stretched and squashed

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