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AP® Physics 1 & 2

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Moderate

Circular Motion and Centripetal Force: Car on a Curve

APPH12-9WMS3K

An $1100\ kg$ car navigates through a ${90}^{\circ}$ circular curve on a flat road. The total arc distance is $120\ m$, ​and the car takes $8.0\ s$ to make it through the complete curve while moving at a constant speed.

What is the magnitude of the centripetal force on the car?

A

$0\ N$

B

$2.1\ kN$

C

$3.2\ kN$

D

$4.8\ kN$