Date: October 20, 19102 at 20:51:35
The last line about relativity in the physics section says "light is affected by gravity because it has momentum and energy." That's great but how does light have momentum when the equation for momentum is F=M*V where F equals the momentum and M is the mass? In other words if light has no mass how does it have momentum? And if it doesn't have mass how is it effected by gravity? I don't understand this. Is there something I missed?
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