1.

a car travels a speed of 120 kilometres per hour for 1 hour and highlights for 1/2 hours and then resumes the journey with a speed of 100 kilometres per hour for the next one and half hour find the average speed​

Answer» DISTANCE = TIME * speedd1 = 120 km d2 = 100 *1.5 = 150 kmAverage speed = TOTAL distance/ total time=270/2.5=108km/h =108 x 5/18 = 30 m/s


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