1. The problem statement, all variables and given/known data 3.0 kg object is moving in plane with x and y coordinates given by x=5t^2-1 and y=3t^2-2 where x and y are meters and t is seconds. Find magnitued of net force acting on object at t=2 seconds. 2. Relevant equations (vectors above the letters where they normally go) F=ma a = ax + ay 3. The attempt at a solution Taking the 2 equations, and differentiating to get the velocities functions, then again to get the acceleration functions I get (the i and j are "hats"): Vx = 10t i and ax = 10 i Vy = 6t i and ay = 6 j a = ax + ay and magnitude a = sqrt (ax^2 + ay^2) = sqrt (10^2 + 6^2) = sqrt (136) = 11.66 m/s^2 Then inserting into F=ma: F = (3.0 kg)(11.66 m/s^2) F = 34.98 N And I can just ignore the "2 seconds" because the same constant force is acting? Or do I need to multiply that force by 2? Thank you for any guidance.