NEET Physics Motion of Satellites Escape Speed and Orbital Velocity Online Test Set B

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Question 1

Question

The moon has a mass of 1/81 that of the earth and a radius of 1/4 that of the earth. The escape speed from the surface of the earth is 11.2 km/s. The escape speed from the surface of the moon is:

Answer

2.49 km/s

1.25 km/s

5.6 km/s

3.7 km/s