Question

An airplane is heading north east at a speed of $141{ms}^{-1}$. The northward component of its velocity is:

• A. $141.4{ms}^{-1}$
• B. $100{ms}^{-1}$
• C. Zero
• D. $50{ms}^{-1}$

Answer 1

Answer: (B)

$100{ms}^{-1}$

By component resolving of velocity in North and East directions and get

So, $\left|\overrightarrow{VN}\right|=141\times \sin \left({45}^0\right)$

$=141\times \frac{1}{\sqrt{2}}=100\frac{m}{s}$

Option $B$ is correct.