A spaceship travels 36,000 km in one hour. Express its speed in km/s.

Answer: 10 km/s

Spaceship speed = 36000 km/h

In 1 hour spaceship travel = 36000 km

We can say that in 60×60 second spaceship travel = 36000 km

∴ In 1second space ship travel

⇒ 36000/(60 × 60)

⇒ 36000/3600

⇒ 10 km/s

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