# Physics

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• Created by: meggyp97
• Created on: 07-03-14 12:23
What is the equation of POWER?
POWER = workdone ÷ time taken
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What is POWER?
The rate at which we change energy (the heavier the object, the more powerful)
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What is MOMENTUM
measument of difficulty to chnage speed and direction of an object
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What is the equation for MOMENTUM?
Momentum = mass x velocity (P=mv)
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What is the equation for VELOCITY?
Velocity = distance (m) ÷ time taken(s)
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What is the equation for WORKDONE?
workdone = force(N) x distance(m)
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How does an object become electrically charged?
Negative electrons ONLY -transferred from an atom charged - when negative electrons are gained or removed from an atom
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Rub an object more = more electrically charged. True or False? Why?
True - more rubs = more electrically charged - but does reach a maximum charge
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Only electrical insulators can become statically charged. True or False?
True - Metals can not become charged
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Charged Objects. Which repel and which attract?
2 x negative = REPEL 2 x positive = repel 1 x negative & 1 x positive = ATTRACT
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## Other cards in this set

### Card 2

What is POWER?

#### Back

The rate at which we change energy (the heavier the object, the more powerful)

What is MOMENTUM

### Card 4

#### Front

What is the equation for MOMENTUM?

### Card 5

#### Front

What is the equation for VELOCITY?