**Ugh wrote:**
Nah Charlie, I asked you to give a figure in feet, but you only said "6 times higher".

Listen you

- I gave you credence for knowing your six times table

That's wrong anyway because you fell into the trap of thinking that because the moon's gravity is 6 times less than earth's, a moon jumper could jump 6 times higher..

I fell into no trap.

Let me bring Arthur C. Clarke into the playpen, he wrote-

**"High jump....the present terrestrial record is just over seven feet, but this does not mean that a lunar high jumper could do six times this, or forty-two feet................The high jump record for the moon will be around thirty feet..."**

Uhuh.

So to redeem yourself, would you care to explain to your enthralled popcorn-munching audience why (as Arthur said) a jumper could only jump 30 feet and not 42 feet on the moon?[/color]

Arthur is referencing the centre of gravity of the jumper. There are way more variables than that though, friction being one of them.

For a vertical jump.....if a man lifts off at 2m per second on Earth, he will do the same on the Moon(probably with a little extra because his muscles are not as constrained). Six times the height, because it is 6 times the difference in gravity. 245% the time because it is the square root of the difference (6).

www.universetoday.com/19710/gravity-on-the-moon/
__Just a specimen analysis:__
The surface acceleration on the moon is 1.624 m/s2. On Earth that figure is 9.807 m/s2. That's 6.04x greater! So a 172 kg suit feels as if it weighs 28.5 kg.

Now

v=a*t → t=v/a

and

D=(1/2)*a*t^2

so

D=(1/2)*a*(v/a)^2 → v^2 / (2*a)

An object propelled from the moons surface at 2 m/s will rise 1.23 m. (4 ft). On Earth the same speed raises you only 203 mm (8 inches).