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A car is moving in a circular path of radius \( 100 m \) with a speed of \( 20 m / sec \). If its speed is increasing at the rate of \( 3 m / sec ^{2} \), the resultant acceleration will be - 

(A) \( 2 m / sec ^{2} \) 

(B) \( 5 m / sec ^{2} \) 

(C) \( 7 m / sec ^{2} \) 

(D) \( 4 m / sec ^{2} \)

1 Answer

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Best answer

Given,

at​ = 3m/s2

v = 20m/s

r = 100m

Centripetal acceleration,

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