A space probe is 7.62 x 10 to the 7th power kilometers from the surface of the planet Mars. If the space probe is traveling towards mars at a arate of 127 meters per second, how many hours will it take the probe to reach the surface of the plant? Round to the nearest hour.

Question

A space probe is 7.62 x 10 to the 7th power kilometers from the surface of the planet Mars. If the space probe is traveling towards mars at a arate of 127 meters per second, how many hours will it take the probe to reach the surface of the plant? Round to the nearest hour. 
Help!? I don't understand what to do to understand how many hours!

Henry · Answer

127 m/s / 1000 = 0.127 km/s. d = r*t = 7.62*10^7 km, 0.127t = 7.62*10^7, t = 7.62*10^7 / 0.127 = 60*10^7 s. t = 60*10^7 5. / 3600 s/h = 167000 h.

Amber · Answer

Thank you so much! I didn't understand it at all!