[gurps] Heinlein Battlesuits

Jeff Wilson jwilson at io.com
Sat Nov 15 12:59:10 CST 2008


> From: <hal at buffnet.net>

> Assuming an earth normal gravity, what would the initial launch velocity
> have to be, in order for an object to leap into the air, and take 15
> seconds to come back to earth?

The book details that jumps involve jets and/or rockets, but this 
question does give an upper bound, if an extreme one:  241 feet per 
second (73 m/s, 160 mph) vertically, 341 feet per second (103 m/s, 225 
mph) if leaping at a 45 deg angle for maximum distance. The distance 
leap will cover 2/3 of a mile (1.07 km), and maximum height in either 
case is 563 meters, 1856 feet.

This is Newtonian math with air resistance neglected as always.

-- 
Jeff Wilson - jwilson at io.com
< http://www.io.com/~jwilson >


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