AP Physics 1mediummcq1 pt
A car on a flat curve at constant speed has a centripetal force provided by static friction. If the car doubles its speed, the required friction becomes
A.four times as large
B.twice as large
C.the same
D.half as large
Explanation
Core Concept
F = mv²/r — doubling v quadruples the required force.
Correct Answer
Afour times as large
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