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Physics 78 Online
OpenStudy (anonymous):

How do I calculate speed if I know horizontal and vertical velocity?

OpenStudy (anonymous):

according to Galileo, it is simply the combination of the two. Think of it like the Pythagorean theorem.\[v (xy) = \sqrt{v _{x ^{2}}+ v _{y ^{2}}}\]

OpenStudy (anonymous):

TY

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