- #1

- 7

- 0

## Homework Statement

A missile is launched from the ground making 45 degree with the horizontal to hit a target at a horizontal distance of 300 km. If it is required to hit a target at a horizontal distance of 675 km launched at same angle with horizontal, find the percentage change in its velocity of projection. (Answer is 50% increase)

## Homework Equations

## The Attempt at a Solution

I did it like this but I got 44.5% whereas the answer is 50%

So I did it like this...

R= u²sin2∅/g

I put R= 300km and 675km in the given formula in two equations....

I got √100/3 and √75

Therefore to find % increase

√100/3 divided by √75 * 100

I got 44.5%

But the answer is 50%.....please help