ChatterBank4 mins ago
technology
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How can I throw a penny twenty feet without using human force?
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For more on marking an answer as the "Best Answer", please visit our FAQ.The answer is to use another type of force... for example hold the penny in your hand and go for a ride on a fairground attraction that creates cetrifugal force. Make sure that you're firmly strapped in and then open up your hand. The penny will continue moving.
You could do the same thing by putting the penny on the roof of your car ensuring that it was held in place by some device and drive quickly.. As soon as you have sufficient speed, jump on the brakes releasing the penny. etc etc