Initial speed u = 54 km h⁻¹, final speed v = 36 km h⁻¹, and time = 36 s = 0.01 h. Average speed = 45 km h⁻¹. Distance = 45 × 0.01 = 0.45 km = 450 m.
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Initial speed u = 54 km h⁻¹, final speed v = 36 km h⁻¹, and time = 36 s = 0.01 h. Average speed = 45 km h⁻¹. Distance = 45 × 0.01 = 0.45 km = 450 m.