For Year 10 & 11- Rev terms
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distance |
Use a telescope to see in the distance.
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time |
In Physics, time is measured in seconds.
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speed |
The sports car could attain a top speed of 200 mph.
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ultrasound |
Ultrasound is sound with a frequency higher than human hearing, used in medicine and for measuring distances.
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uncertainties |
When you make measurements there are always uncertainties, you can show these with error bars on your graph.
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scalar |
Scalar is a quantity that has magnitude (size) but no direction.
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displacement |
Displacement is distance with a direction, e.g. 2 miles East.
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vector |
A vector quantity has both size and direction.
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velocity |
Velocity is speed in a particular direction.
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acceleration |
The most familiar kind of acceleration is a change in the speed of an object.
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gradient |
A steep gradient on the beach can create pounding waves.
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equations |
Equations of motion are calculations which link velocity, acceleration, speed, distance and time.
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kinetic |
A motor converts electrical energy to kinetic energy.
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newton |
Newton was a scientist who gives his name to Newton-metre and some laws of physics, e.g. Newton's third law.
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equilibrium |
Equilibrium is reached when the resultant forces balance out to zero, so the motion doesn't change (e.g. a parked car).
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momentum |
The stone gathered momentum as it rolled down the hill. It is calculated by mass x velocity.
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collision |
Inelastic collision is an event where objects collide but kinetic energy is not conserved.
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motion |
He went along in a forward motion.
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* This sentence was added by a Spellzone user.
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