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# PHYSICS HELP

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A car on flat ground accelerates at 0.785 m/s^2 when a net force of 1050 N acts on it. How much normal force acts on the car?

May 14, 2019

#1
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$$F_n = mg$$, so let's find the mass

We know the force, $$F$$, and the acceleration, $$a$$, so we can use $$F = ma$$

$$F = ma \rightarrow 1050 = m(0.785) \rightarrow m = 1337.58 kg$$

Now that we know the mass, we can go back to $$F_n$$

$$F_n = mg \rightarrow F_n = (1337.58)(9.8) \rightarrow F_n = 13108.3 N$$

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May 14, 2019