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9 Cards in this Set
- Front
- Back
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What are the characteristics of interaction pairs?
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Equal in size
Opposite in direction Act on different objects |
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Explain how cars move, using terms about interaction pairs
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The tyres push backwards against the ground, the interaction pair is the ground pushing the car forward
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Explain how rockets move, using terms about interaction pairs
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Hot gas is pushed out of the base of the rocket, this leads to the rocket being pushed upwards, in the opposite direction
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What is the upwards force exerting by a surface called?
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Reaction
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Define resultant force
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The sum of all the forces adding together
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How do you calculate the average speed?
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Distance / Time
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Define Instantaneous speed
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Speed at a particular moment
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Explain how the police use radar guns to measure a vehicles speed
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The guns bounce microwave radiation off approaching cars, the guns then pick up the radiation and calculate the speed
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Define velocity
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The speed in a certain direction
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