Physics

Problem

29. A

50-\mathrm{kg}

student stands on a scale in an elevator. At the instant the elevator has a downward acceleration of 1.0

\mathrm{m} / \mathrm{s}^{2}

and an upward velocity of

3.0 \mathrm{~m} / \mathrm{s}

, the scale reads approximately (A) 350 N (B) 450 N (C) 500 N (D) 550 N (A) 350 N (B) 450 N (C) 500 N (D) 550 N