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Light travels in a vacuum at 3.00*10^8 m/. Determine the time in seconds..

Laser light is sent from Earth, reflects off a mirror on the Moon, and returns to Earth. The average Earth Moon distance is 3.84*10^5 km.

2007-09-05 16:45:12 · 1 answers · asked by lifehouse 1 in Science & Mathematics ➔ Physics

1 answers

t = D/r = 2(3.84 x 10^5 km)(1000 m/km)/(3.00 x 10^8 m/s) = 2.56s

2007-09-05 21:56:59 · answer #1 · answered by jsardi56 7 · 0⤊ 0⤋

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