Question

The velocity of projection of a projectile is given by : $\overrightarrow{u}=5\hat{i}+10\hat{j}$. Range is:

• A. $2m$
• B. $4m$
• C. $6m$
• D. $10m$

Answer 1

The correct option is D $10m$

We have $u_x=5$ and $u_y=10$
Range $=\frac{2usin\theta .ucos\theta }{g}=\frac{2u_x{u}_y}{g}=\frac{2\times 10\times 5}{10}=10m$