A certain freely falling object requires 1.85s to travel, Ask an Expert

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Q. A certain freely falling object requires 1.85 s to travel the last 31.0 m before it hits the ground. From what height above the ground did it fall?

Q. the moons mass is 7.4x10^22 kg and its radius is 1700 km. What is the speed of a spacecraft moving in a circular orbit just above the lunar surface? What is the escape speed from the moon?

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Category:- Physics
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