1. The problem statement, all variables and given/known data A 9 kg object is subjected to two forces, [PLAIN]http://www.webassign.net/images/Farrowbolditalic.gif1 [Broken] = 7 N i - 4 N j and [PLAIN]http://www.webassign.net/images/Farrowbolditalic.gif2 [Broken] = 7 N i - 9 N j. The object is at rest at the origin at time t = 0. (a) What is the object's acceleration? (b) What is its velocity at time t = 14 s? (c) Where is the object at time t = 14 s? (All answers in unit vector notation) 2. Relevant equations (a) Fnet=ma (b) V = V0 + at (c) X = X0 + V0t + 1/2at2 3. The attempt at a solution (a) Fnet = F1 + F2 = 14i - 13j Fnet = ma -> a = (14i-13j)/9 a = 1.56i - 1.44j (MARKED INCORRECT) Why is this incorrect? If a = F/m then all I should have to do is add up the forces to get Fnet. (b and c) I've used the equations above and got the answers wrong. Overall, I won't be able to get these answers correct unless I get the correct acceleration.