1. The problem statement, all variables and given/known data A 1.4 kg object at x = 2.00 m, y = 3.10 m moves at 4.9 m/s at an angle 45° north of east. Calculate the magnitude of the object's angular momentum about the origin. Answer is 5.3 kg m^2 /s 2. Relevant equations These were the only three I could think of: L=Iω L=mvr ω=v/r 3. The attempt at a solution First attempt: L=mvr L= (1.4)(4.9)sqrt(4+3.1^2) L=25.3077, not the right answer Second attempt: Diagram here. I tried to find the tangential velocity as shown: ∠2 = arctan (3.10/2.00) = 57.17° Vtan = 4.9cos(45) / cos(57.17) = 6.390914 m/s ω=v/r=6.390914/Sqrt(4+3.1^2) = 1.73234 rad/s Then I'm not really sure how to proceed after this because I'm not entirely sure what equation to use for I. Third attempt: Vtan=v ∴ L=1.4(6.390914)(sqrt(4+3.1^2) = 8.94728 m/s, not the right answer Is my diagram wrong or am I missing something very important?