Flashcards
Speed and Velocity
Flashcards do conjunto (4)
- 1Speed and velocity is how fast something is moving. It is measured in m/s.The difference between the two is that velocity must be accompanied by a distance (E.g. 10 m/s north) where speed doesn't.
- 2The equation to work out speed is: Speed = Distance/Time S = D/TAlternate equations to work out distance and time are:
Distance = Speed x Time (D=S x T)
Time = Distance/Speed (T=D/S) - 3Acceleration is how fast the velocity/speed is changing. This is measured using: Acceleration = Change in velocity/TimeChange in velocity is calculated like so:
Final velocity - initial velocity (v-u)
Therefore the symbol equation for acceleration is:
A= (v-u)/t - 4On Distance time graphs, Gradient = Speed. To work out the gradient, you take the no. on the vertical axis and divide it by the no. on the horizontal line.The steeper the graph, the faster the thing in question is moving.
A steeping curve means it's speeding up, while a leveling-off curve means it's slowing down.
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- Descrição
- Cambridge IGCSE Physics (Forces and Motion) FlashCards sobre Speed and Velocity, criado por KNiGHTS em 10-11-2013.
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- KNiGHTS
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