AP Physics 1hardmcq1 pt
A 500 kg roller coaster car tops a hill of radius 20 m at 14 m/s (g = 10 m/s²). The normal force on it is
A.100 N
B.4900 N
C.5000 N
D.9900 N
Explanation
Core Concept
mg − N = mv²/r, so N = 5000 − (500)(196)/20 = 5000 − 4900 = 100 N.
Correct Answer
A100 N
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