kimmk7273 kimmk7273
  • 10-04-2024
  • Physics
contestada

A car travelled first third of a distance at 10 km/h, second third of the distance at 20 km/h and last third of the distance at 60 km/h. Mean speed of the car over entire distance is
A. 30 km/h
B. 20 km/h
C. 18 km/h
D. 54 km/h

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