A policeman is positioned on a highway without a radar gun. He knows the distance from the construction zone to an exit is a quarter mile, and the speed limit is 60 mph. He times a car taking 10 seconds to go the quarter mile. He times a truck taking 12 seconds to go the quarter mile. Could he ticket them for speeding? Justify your answer.

A policeman is positioned on a highway without a radar gun. He knows the distance from the construction zone to an exit is a quarter mile, and the speed limit is 60 mph. He times a car taking 10 seconds to go the quarter mile. He times a truck taking 12 seconds to go the quarter mile. Could he ticket them for speeding? Justify your answer.

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