I know that v * a = 5.06, I need to find the one that is in red, ( v dot)

Note, i is not the same as |al. It is the magnitude of the acceleration of the par- ticle along its instantaneous direction of motion.)- 0) At some time t. the velocity of a particle is v = (2.5 i 1.2 j + 3.7 1:) m/s and its acceleration is a = (0.3i 0.2 j + 1.1 1:) m/s?'. Calculate v - a. U, i). and demostrate that v - a = v 1'). (Hint: remember i) is not Ial. check Part 1 of the homework; 3 points)