A passenger train passes a single sign post in 8 seconds. If the length of the train is 160 meters, find its speed in km/h. MCQ with Answer and Explanation
Two cars A and B leave an intersection simultaneously at right angles. A travels North at 60 km/h and B travels East at 80 km/h. Find the direct distance between them after 30 minutes.
Explanation:
Time = 30 minutes = 0.5 hours. Distance covered by A = 60 * 0.5 = 30 km. Distance covered by B = 80 * 0.5 = 40 km. Distance between them = sqrt(30^2 + 40^2) = sqrt(900 + 1600) = sqrt(2500) = 50 km.
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