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HardPhysicsRotational motion
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-- 44. An automobile moves on a road with a speed of 54 km/h. The radius of its wheels is 0.45 m and the moment of inertia of the wheel about its axis of rotation is 3 kg m². If the vehicle is brought to rest in 15 s, the magnitude of average torque transmitted by its brakes to the wheel is:
A
8.58 kg m² s⁻²
B
10.86 kg m² s⁻²
C
2.86 kg m² s⁻²
D
6.66 kg m² s⁻²
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