Force exerted by the ball on the kickers foot
A barefoot field-goal kicker imparts a speed of 25 m/s to a football initially at rest. If the football has a mass of 0.38 kg and the time of contact with the ball is 0.011 s, what is the force exerted by the ball on the kicker's foot?
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What is the two-sided 95% confidence interval for the population mean given the following sample: x=0,2,3,5?
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