1.

A boy having a mass equal to 40 kilograms is standing in an elevator. The force felt by the feet of the boy will be greatest when the elevator `(g=9.8"metres"//sec^(2))`A. Stands stillB. Moves downward at a constant velocity of 4 metres/secC. Accelerates downward with an acceleration equal to `4"metres"//sec^(2)`D. Accelerates upward with an acceleration equal to `4"metres"//sec^(2)`

Answer» Correct Answer - D


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