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16. A car is moving at a speed of 72 km/hr. the diameter of its wheels is 0.5 m. If the wheels are stopped in 20 rotations by applying brakes, then angular retardation produced by the brakes is

(a)       – 25.5 rad/s2

(b)  – 29.5 rad/s2                                                

   (c)   – 33.5 rad/s2

(d)  – 45.5 rad/s2

Ans. a

(10)

5/5 - (2 votes)

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