Question

The distance from Earth to Mercury is 9.21\times 10^{7}9.21×10

7
kilometers. How long would it take a rocket, traveling at 5.72\times 10^{4}5.72×10
4
kilometers per hour to travel from Earth to Mercury? Round your answer to the nearest whole number of hours.

Answer 1

1610 hours

Explanation:

You want to know the travel time for a distance of 9.21×10⁷ km at a speed of 5.72×10⁴ km/h.

Time

The relation between time, speed, and distance is ...

time = distance/speed

Using this relation for the given values, we have ...

time = (9.21×10⁷ km)/(5.72×10⁴ km/h) = (9.21/5.72)×10³ h ≈ 1610 h

The travel time would be about 1610 hours.