A 49 kg lady stands on a spring scale in an elevator. During the firs – McqOptions

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1.	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
A.	10 m/sec
B.	15 m/sec
C.	20 m/sec
D.	25 m/sec
Answer» D. 25 m/sec

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