Things You Thought You Knew – What Is Exit Velocity?
StarTalk Radio
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How to Hit a Home Run in Yankee Stadium?
The ball has to leave the bat anywhere between 90 and 120 miles an hour. But you can easily pop home runs at 100 miles an hour exit velocity. The only way to get the velocity of the ball is to use a Doppler phenomenon on it. If you are looking exactly in the direction the ball is coming, if you are at any angle to that, you will measure a lesser speed than the actual ball is moving.
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