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Observation, Speed & SpaceStandalone practice

You usually drive a street at 30 mph. Today you drive a highway at 60 mph, twice as fast. Compared with 30 mph, about how long is your braking distance at 60 mph?

Two views show the same blue car on a straight road, first at 30 mph and then at 60 mph. Neither view selects a braking distance.

Two views show the same blue car on a straight road, first at 30 mph and then at 60 mph. Neither view selects a braking distance.

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