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Two forces are applied to a car in an effort to move it. A)What is the resultant of these two forces? B) If

the car has a mass of 3000 Kg, what acceleration does

it have?

the diagram of the car shows that it is being pulled

in two different directions one arrow is pointing

northeast with a force of 400 Newtons at an angle of

30 degrees, and the other direction is northwest at an angle

of 10 degrees and a force of 450 Newtons.

I tried using 400cos30 and 450cos10, but it doesn't work. The answers are in the back of the book, but I'm looking for how to do the math and I don't want to just copy the answers down because I would like to know how to solve this. If it helps, the answers are:

A) 789 Newtons at 8.8 degrees to the right of forward direction

B) 0.266 m/s^2 in direcrion of resultant force

Thank you in advance, and please help me with the math in this problem.