# physics

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The wheels of a midsize car exert a force of 2100 N backward on the road to accelerate the car in the forward direction. If the force of friction including air resistance is 250 N and the acceleration of the car is 1.80 m/s2, what is the mass of the car plus its occupants?
4.

• physics -

netforce=m*a
2100-250=m*1.8 solve for mass m.

• physics -

1027

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