4058832
9781410914439
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A ramp is a simple machine that makes it easier for us to move things. A ramp has a bigger distance along the slope than it has along the vertical distance. Find out all about this simple machine in this title.Sadler, Wendy is the author of 'Using Screws ', published 2005 under ISBN 9781410914439 and ISBN 1410914437.
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