1. The problem statement, all variables and given/known data Interactive Solution 4.11 offers help in modeling this problem. Two forces, vector F 1 and vector F 2, act on the 5.00 kg block shown in the drawing. The magnitudes of the forces are F1 = 30.5 N and F2 = 47.5 N. What is the horizontal acceleration (magnitude and direction) of the block? link to picture (let me know if it works): http://www.webassign.net/CJ/04_11.gif 2. Relevant equations SOHCAHTOA equations Newton's 2nd law: F=ma 3. The attempt at a solution Because F1 is at an angle, I broke it up into its y and x components: sin(-65)*30.5 = -27.6 N cos(-65)*30.5=-12.89 N Since the question only asks for the accerelation in the x direction, I got the following equation: (-47.5 N+-12.89N)=m*a=5*a Then I solved for a and got 12.078 m/s^2 in the x direction. But the website of my homework is telling me this is wrong. help?