A vector `vec(A)` points vertically upward and `vec(B)` points towards north. The vector product `vec(A)xxvec(B)` is :-

Options

A. zero
B. along west
C. along east
D. vertically downward

Answer

B

Explanation

Direaction of vector A is along Z-axis
`therefore A=ak^(a)`
Directionof vector B is towards north
`therefore B=bi`
Now `A xxB=ahat(k)xxbhat(i)=ab(-hatj)`
`therefore` The direction is `A xxB` is along west .