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I am stuck on this question, I don't understand what to do. Any help would be great! I know that I have to use Newton's Second Law in the x and y directions.

Greezy is pushing a very large crate of 50 kg across the floor at a constant velocity with a force of 200N. He is pushing on the crate upwards at an angle of 20 degrees.

What is the coefficient of kinetic friction between the ground and the create?

I don't understand what to do with that angle that is upwards?

Thanks again!