Acar with a mass of 1,500 kg requires a centripetal force of 640 n to safely follow a circular curve in the road at 13.4 m/s. what is the radius of the curve?
31 m
77 m
421 m
860 m

421 m

Explanation:

In a uniform circular motion, the centripetal force is given by:

where

m is the mass of the object

v is the tangential speed

r is the radius of the circular trajectory

In this problem, we have:

F = 640 N

m = 1500 kg

v = 13.4 m/s

So, we can re-arrange the equation to find the radius of the curve, r:

it is called kinetic energy

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