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If i stand on a boat, which is traveling in 60 m/h and shooting a football at 60 m/h in the way the stern is pointing (thus in the opposite direction of the boats traveling speed) What velocity will this football have? And is there an equation for this?(Hope this haven't been mentioned before. Because I've looked but I didn't find anything)
Hi again!I just want to check if i do understand...We have two lightbeams that are moving away from eachother with me as an stationary observer in the middle. If they would be moving at 60m/s, the gap in between would increase with (approximately, Lorentzfactor is neglectable) 120m/s, right?But if they were moving at the speed of light, would the gap increase with c or with 2*c?Because in special relativity, lights velocity is equal to all observers, and because of the formula Lightarrow gave me I think it is c.