AP Physics 1mediummcq1 pt
A 70 kg person stands on a scale in an elevator accelerating upward at 2.0 m/s² (g = 10 m/s²). The scale reads
A.840 N
B.700 N
C.560 N
D.140 N
Explanation
Core Concept
N − mg = ma gives N = m(g + a) = 70(12) = 840 N.
Correct Answer
A840 N
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