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Work & Energy - Average Force of Air Resistance

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A softball having a mass of 0.25 kg is pitched at 114 km/h. By the time it reaches the plate, it may have slowed by 10 percent. Neglecting gravity, estimate the average force of air resistance during a pitch, if the distance between the plate and the pitcher is about 15 m.

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Solution Summary

The solution is given equationally regarding the average force of air resistance.

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F = m*a

a = delta(v)/delta(t)

The average velocity is [114 km/h + (0.90)(114 km/h)] / 2 ...

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