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## Homework Statement

An astronaut throws a rock at 12 m/s at an angle of 25° above horizontal from a height of 3.25 m above the surface. How far horizontally does the rock travel before hitting the surface of Pluto?

Pluto has a mass of 1.27 E22 kg

And a radius of 1.14E6 m

## Homework Equations

(Projectile equations )

d=vo(t) + .5a(t^2)

Dx=vx (t)

## The Attempt at a Solution

I know how to solve projectiles , except how do I find gravitational acceleration for Pluto ? [/B]