The escape speed of a projectile on the earths surface is 11.2kms^-1 A body is projected out with thrice this speed. What is the speed of the body far away from the earth? Ignore presence of the Sun and other planets
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Explanation:
Gravitational potential energy of the projectile far away from the Earth is zero. = √8 × 11.2 = 31.68 km/
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