Nothing, you can't cross a vector and a scalar.
No guts.
He had to get a new goat !
M'laria
A: A mosquito can fly, but a fly can't mosquito.
Yoda-ling
Nothing, you can't cross a vector with a scaler.
Nothing, you can't cross a vector by a scalar. EDIT: changed multiply to cross.
You can't. A mosquito is a vector and the mountain climber is a scaler. Courtesy of my physics professor.
You can't cross a scalar and a vector.