Q.
A. 1/2 ρ A (v1 - v2)
B. 1/2 ρ A (v1 + v2)
C. 1/2 ρ A (v21 - v22)
D. 1/2 ρ A (v21 + v22)
E. None of the above
Correct choice: C
Explanation: