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#1 2008-04-17 03:00:56

laur18
New Member
Registered: 2008-04-17
Posts: 5

27.8- Speed of laser beam

A starship blasts past the earth at 2.0*10^8m/s. Just after passing the earth, the starship fires a laser beam out its back of the starship.

With what speed does the laser beam approach the earth?

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