AP Physics 1mediummcq1 pt
A 70 kg person stands on a scale in an elevator accelerating downward at 2.0 m/s² (g = 10 m/s²). The scale reads
A.560 N
B.840 N
C.700 N
D.0 N
Explanation
Core Concept
mg − N = ma gives N = m(g − a) = 70(8) = 560 N.
Correct Answer
A560 N
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