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Statement of a problem № 41938

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A super high-speed 12-car Italian train has a mass of 660 metric tons (660, 000kg). IT can exert a maximum force of 400 kN horizontally against the tracks, whereas at maximum velocity (300km/h), it exerts a force of about 150 kN. Calculate (a) Its maximum acceleration, and (b) Estimate the force of air resistance at top speed.




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