# Is it possible to jump down a 10 meter building on Moon and be perfectly fine? [duplicate]

I was told that if you theoretically jump down from a three-floor building (assume 10 m) on the Moon surface, you will equally break your bones as in if you were doing that on Earth. I do not know why would this be true: the acceleration due to free fall on Moon is significantly smaller, thus the final v shall be smaller than v on Earth. Would you be perfectly fine if you jumped down a 10 meter building on Moon?

• Duplicate of space.stackexchange.com/q/4678/6946 – Steve Jessop Mar 16 '15 at 12:33
• Not sure this is a duplicate... the answers on the other question are so long and detailed that I didn't see if the answer here should be yes or no. I vote to close this one open, in the hope that someone will provide a simple table with height equivalences for Earth and Moon. – mins Mar 16 '15 at 18:13
• @SteveJessop that answer assumes that a crash test dummy won't break apart at 60 km/h, and goes from there. Obviously not applicable and not the same answer. – raptortech97 Mar 16 '15 at 21:00

It is certainly not the same.

Gravity on the Earth's surface is 9.81 m/s2. Assuming no upward or downward initial velocity, this means your velocity at ground level falling from 10 m is about 14 m/s (sqrt(2 * 9.81 * 10)).

Gravity on the Moon's surface is 1.625 m/s2. The same fall will result in final velocity of about 5.7 m/s (sqrt(2 * 1.625 * 10). This is equivalent to a fall on Earth from about 1.6 m (5.7 ^ 2 / 2 / 9.81).