# physical science

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A car weighing 15,000 N is speeding down the highway at 90 km/h. What is its momentum?

• physical science -

Convert the weight W (in N) to the mass M (in kg).

M = W/g

Then convert the speed in km/h to m/s.

V = 90 km/h = 25 m/s

The momentum is M*V. The preferred units are km*m/s.

• physical science -

166.66

• physical science -

38239.25

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