A truck travelling due to north at `20m s^(-1)` turns west and travels at the same speed. Find the change in its velocity.
A. `40m//s N-W`
B. `20sqrt(2)m//sN-W`
C. `40m//s S-W`
D. `20sqrt(2) m//s S-W`
A. `40m//s N-W`
B. `20sqrt(2)m//sN-W`
C. `40m//s S-W`
D. `20sqrt(2) m//s S-W`
Correct Answer – D