6. A two-dimensional velocity filed is given by V= (x-y+x)i-(2x°y+y)j in arbitrary units. At (x, y) = (1m, 2m) determine (a) the velocity component in the direction 0= 45° and

(b) the rate of change of temperature (dT/dt) when the temperature field associated with the velocity field is T= 4x'-3y', in arbitrary units. (Hint:Watch video "Chapter 4-Acceleration and temperature. mp4")