SPACE MATHEMATICS-3

1. Problem: How long did it take Pioneer 10's radio signals, traveling at the speed of light, (3.00 x 10 5 km/s) take to reach Earth from the distance of Pluto in April 1983 , a distance of 4.58 x 10 9 km ? Express your answer in hours.
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2. What was Pioneers 10's average speed in km/h, if it traveled about 4.58 x 10⁹ km between 3 March 1972 and 25 April 1983?
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