A 1800.0 kg car accelerates uniformly to double its speed from 36.4 km/h in 6.?

Question

A 1800.0 kg car accelerates uniformly to double its speed from 36.4 km/h in 6.33 s. What net force acted on this car?

Answer 1

Force is the product of mass and acceleration. Mass is given as 1800 kg. For the acceleration, you take the change in velocity over the change in time. The increase in velocity is the same as the given initial velocity, and the change in time is given. So just divide 36.4 km/h by 6.33 s, and then multiply by (1000m / 1km)(1hr / 3600 s) to get it into SI units of m/s. That's the acceleration, and you just have to multiply by the mass.

Answer 2

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