A baseball pitcher throws a ball straight up into the air at a speed of 21.0 m/s. In the process, he moves his hand through a distance of 1.40 m. If the ball has a mass of 0.150 kg, find the force he exerts on the ball to give it this upward speed.(adsbygoogle = window.adsbygoogle || []).push({});

My problem is that I don't know where to use the 1.40m. I assume I have to find the acceleration somehow and then plug it into F=ma but every method I try seems to fail. Thanks for the help.

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# Homework Help: Force on ball

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