The mass of a subway car and it's passengers is 40,000 kg. if it's acceleration as it leaves the station is 0.9 m/s^2, what is the net force acting on it?

Question

Tucker Snyder

Physics

16 September, 09:47

The mass of a subway car and it's passengers is 40,000 kg. if it's acceleration as it leaves the station is 0.9 m/s^2, what is the net force acting on it?

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Answers (1)

Know the Answer?

Ronan Kane · Answer 1

To answer this problem, we have to employ Newton's Second Law of Motion, or F = ma. F is the force in Newtons (N) where as m is mass (kg) and a is the acceleration (m/s^2). An easy plug in will give us

F = ma

F = (40,000 kg.) (0.9 m/s^2)

F = 36,000 N.

The answer is 36,000 N. Good luck!