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How can a glider move without power?
A glider is a type of aircraft that doesn’t have an engine. To make a glider begin moving, it needs to be given an initial velocity. You can do this by throwing a small, hand-held glider (like a paper airplane). Hang-glider pilots often run and jump off the side of a hill or cliff to get going. Without an engine to keep up speed and maintain lift, gliders can only fly until drag slows them down completely and they come in for a landing.