A 49 kg lady stands on a spring scale in an elevator. During the first 5 sec, st

Question

A 49 kg lady stands on a spring scale in an elevator. During the first 5 sec, starting from rest, the scale reads 69 kg. The velocity of the elevator will be

Options:

A . 10 m/sec

B . 15 m/sec

C . 20 m/sec

D . 25 m/sec

Answer: Option C

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