AP Physics 1hardmcq1 pt
A 1500 kg car rounds an unbanked curve of radius 50 m. If μ_s = 0.40 (g = 10 m/s²), the maximum speed without skidding is about
A.14 m/s
B.20 m/s
C.7.1 m/s
D.200 m/s
Explanation
Core Concept
μ_s mg = mv²/r gives v = √(μ_s gr) = √(0.40·10·50) = √200 ≈ 14 m/s.
Correct Answer
A14 m/s
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