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Mike car can accelerate from 0 mph to 40 in 5 seconds. What is the acceleration of his miles per hour second?

To find the acceleration in miles per hour per second, we need to divide the change in velocity by the change in time.

The change in velocity is 40 mph - 0 mph = 40 mph.

The change in time is 5 seconds.

Therefore, the acceleration is 40 mph / 5 seconds = 8 mph/s.