FORCES AND SPEED ISSUES

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Speed Costs

reducing speed= reduces fuel usage= because air resistance is greater at high speed than at a low speed.

wind deflectors can be put on lorries: reduces air resis. on lorry= less engine force needed= les fuel used.

- force on a person struck by a car increases with speed. higher speed= higher force on person when hit.

Speed Cameras.

effective use from vehicle drivers speeding over a

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