Find the initial speed of the rock as it left astronaut hand

Reference no: EM13667198

A spherical planet called "Glob" has a mass of 7.80 × 10¹⁸kilogram and a radius of 6.30 × 10⁴meter. An astronaut on the surface of Glob throws a rock straight up. The rock reaches a maximum height of 1.20 × 10³meter above the surface of the planet before it falls back down. Find the initial speed of the rock as it left the astronaut hand? (Glob has no atmosphere, subsequently no energy is lost to air friction).

Reference no: EM13667198

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