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F = m A = (4,000) (30/5) = 24,000 newtons

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āˆ™ 14y ago
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āˆ™ 3mo ago

To stop the bus, you need to calculate the deceleration first: (a = \frac{v_f - v_i}{t} = \frac{0 - 30}{5} = -6 , m/s^2). Then, use the formula (F = ma) to find the force: (F = 4000 kg \times 6 m/s^2 = 24000 N).

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Q: What is the force needed to stop a bus of mass 4000kg from 30m s in 5 seconds?
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