1. The problem statement, all variables and given/known data A bus travelling at 65km/h on a bearing of 190° changes direction to south-east and continues at the same speed. Find the change in velocity of the bus. 2. Relevant equations 3. The attempt at a solution I'm fairly hopeless at drawing the diagrams for these questions so I calculated the x and y components for both before and after the change in direction and i got: 65cos190=-64.01 65sin190=-11.29 65cos135=-45.96 65sin135=45.96 then i substracted vector 1 from vector 2 and got: x=-45.96+64.01 y=45.96+11.29 (double - is positive) x=18.05 y=57.25 thus r is √(18.05^2+57.25^2)=60.018 and the change in direction is thus inverse tan(57.25/18.05)=72.5 degrees Is it viable to get an accurate answer without a diagram? And am I correct?