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Force = mass x acceleration

F = ma In the problem we know the force exerted, the mass and the acceleration.

F = 500 N

m = 50 kg

a = 9 m/s2

How much force was needed to get a 50 kg object to accelerate at 9 m/s2?

Use the formula.

F = ma

    =50 x 9

    =450 N

Force applied = 500 N

Friction Force = 500 - 450

                    =50 N

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Q: A man exerts a force of 500 newton on a 50kg box the box accelerates at 9ms2 what is the friction force of the box can you put the working out?
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