Quote:
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Originally Posted by Nightbat®
strangly - in space I only need to tap a 400lb safe traveling at 60mph with my finger
to make it change direction
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Where did you get that idea? F=ma, regardless of being in space or on the ground. Lack of gravity does not mean a lack of intertia or lack of mass. You will need to exert a good bit of force to stop a 400lb object traveling at 60mph. You could make it change direction of course, but how much?