The pull of gravity (g) on Mars is 3.7 m/s2. If an astronaut on Mars lifts a 10 kg rock 1 m off the ground, just to see what’s under it, how much work has the astronaut performed?

At the surface of the Earth, the acceleration due to gravity is roughly 9.8 m/s2 (32 ft/s2). The average distance to the centre of the Earth is 6,371 km (3,959 mi). , we can work out gravitational acceleration at a certain altitude. Example: Find the acceleration due to gravity 1,000 km (620 mi) above Earth's surface.

Explanation:

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