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7. Compare the energy needed to move 20 people 10km with 5 cars of 4 people...

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Physics

7. Compare the energy needed to move 20 people 10km with 5 carsof 4 people with 3 stops at a speed of 70km / h.

With a bus that stops every 2000m and only reaches a speed of 45km / h.

Both engines have an efficiency of 30%, the car with 4 peopleweighs 1.4 tons, the bus 12.5 tons (including 20 people).

cdA = 0.8m2 for the car and the bus is 3.2m high and2.5m wide and has an air resistance coefficient of 0.5.

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