Question

A particle is projected with a velocity v=3i-j+2k

Answer 1

Explanation:

$\Huge\underline{\underline{\sf Answer}} \\ v = 3i - j + 2k \\ |v| = \sqrt{ {3}^{2} + ( { - 1})^{2} + {2}^{2} } \\ |v| = \sqrt{9 + 1 + 4} \\ |v| = \sqrt{14}$