question_answer

What will be the effect on horizontal range of a projectile when its initial velocity is doubled, keeping the angle of projection same?                      

Answer:

                As \[R=\frac{{{u}^{2}}\sin 2\theta }{g}\] i.e.,       \[R\propto {{u}^{2}}\]   When \[u\]is doubled, the horizontal range becomes four times the original horizontal range.