A space probe that is 6.4x10 12 meters away from earth sends signals to NASA. if the radio signals travel at the speed of light (3x10 8 m/sec) how long will it take the signals to reach NASA?

Answer 1

The simple equation for motion at a constant velocity v is d = v·t

Solving for t gives t = d/v.

Plugging in, t = (6.4·10¹² m) / (3.0·10⁸ m/s) = 2.1·10⁴ s