Term
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Definition
| The change in velocity in unit time. Vector |
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Term
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Definition
Change in velocity/ Time taken
a=(v-u)/t |
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Term
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Definition
| Distance travelled/ Time taken |
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Term
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Definition
| They cause no change in motion |
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Term
| Change in momentum formula |
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Definition
| Force = change in momentum/ time taken |
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Term
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Definition
| Distance moved in a stated direction. Vector |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| Force which opposes motion |
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Term
| Gravitational field strength, g |
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Definition
| The force that gravity exerts on 1 kg (unit: N/kg) |
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Term
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Definition
| Force that masses exert on each other |
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Term
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Definition
| The stretching force is proportional to the extension if the elastic limit is not exceeded |
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Term
| Moment of a force formula |
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Definition
| Moment = force * distance from the pivot |
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Term
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Definition
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Term
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Definition
| When body B exerts a force on body A, then body A exerts an equal and opposite force on body B |
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Term
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Definition
| A satellite will orbit a massive body due to gravitational attraction |
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Term
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Definition
Orbital speed = orbital circumference/time period
=2*π*r/T |
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Term
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Definition
| When a body is in equilibrium, the sum of the clockwise moments about any point equals the sum of anticlockwise moments |
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Term
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Definition
| Quantity with only magnitude |
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Term
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Definition
| The distance travelled in unit time. Scalar |
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Term
| Stars, planets, moons ... |
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Definition
| Moons orbit planets which orbit stars |
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Term
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Definition
| Thinking distance + braking distance |
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Term
| The universe contains ... |
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Definition
| ... one hundred thousand million galaxies each with one hundred thousand million stars |
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Term
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Definition
| A push or a pull which causes an acceleration |
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Term
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Definition
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Term
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Definition
| Quantity with both magnitude and direction |
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Term
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Definition
| The distance travelled in unit time in a stated direction. Vector |
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Term
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Definition
| The force of gravity on an object |
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