Question: On a highway there is a flashing light to mark the start of a section of the road where work is being done. Who measures
On a highway there is a flashing light to mark the start of a section of the road where work is being done. Who measures the proper time between two flashes of light?
(a) A worker standing still on the road.
(b) A driver in a car approaching at a constant velocity.
(c) Both the worker and the driver.
(d) Neither the worker nor the drive
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