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Calculate the escape speed from the surface of Triton.

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ve = (2GM/r)1/2

Radius of Triton r = 1350 km 

Mass of Triton M = 2.14 × 1022 k

ve = ((2 x 6.67 x 10-11 x 2.14 x 1022)/(1350 x 103))1/2

ve = (0.02114 × 108)1/2 = 1453.9 m/s 

ve = 1.453 km/s

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