4 ms·
A bit off-topic, but I just googled some IIT-JEE questions and found the following: A large number of bullets are fired in all directions with same speed u.
by lqet 5y ago
A bit off-topic, but I just googled some IIT-JEE questions and found the following:
A large number of bullets are fired in all directions with same speed u. What is the maximum area on the ground on which these bullets will spread.
The provided answers all depend only on u, pi, and g.
How can this be possible? Obviously, if I fire the gun from a tower, this area will be larger than when I fire it from the ground, and thus also depends on the height above ground of the gun.
- flaubere 5y agoNot sure why you are asking this in this thread, but the implication is that the bullets are fired from ground level, not necessarily horizontally. The maximum distance a projectile can travel when fired from ground level is the basic first result of ballistics.
- tyleo 5y agoI think I understand. From height 0 figure out what gun angle gives the largest distance and then calculate the area of the circle with that distance as radius.
- xNeil 5y agoIn the JEE, you generally assume the range to be the distance the projectile covers before reaching the launch height again, unless specified otherwise.
- xNeil 5y agoYou have to assume the angle of projection is 45 degrees, in which case the range of the projectile becomes (u^2/g). (Since Range = (u^2)(sin2(theta))/g) Hope I helped!