Determine the magnitude of the sum V1 + V2. Express your answer using two significant figures. Vector V 1 is 6.5 units long and points along the negative ar axis. Vector V2 is 8.8 units long and IVO AEQ CO ? points at 45 0 to the positive r axis. VI+ V 2= units Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part D Determine the angle of the sum V1 + V2. Express your answer using two significant figures. IVO 0 = counterclockwise from the positive r-axis Submit Request