# A car traveling at 15 m/s on level highway is brought to stop in 10 seconds by a braking force of 3000 N. What is the car's mass?

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by shini27

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by shini27

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Force = Mass × Acceleration

where Force N = kg·m/s²

Derive Mass formula:

Force/Acceleration = (Mass × Acceleration) / Acceleration

Mass = Force / Acceleration

Since Acceleration = Velocity/Time

Then:

Mass = Force / (Velocity/time)

Mass = (3,000 kg ·m/s²) / [(15 m/s) ÷ 10 s]

Mass = (3,000 kg·m/s²) / (1.5 m/s²)