| This is one of the n topics (why do we have 2 | | | | what is it all proportional to ? is it time?? |
| eyes, gravity, speed etc..,) we discussed | | | | Here is a experiment conducted by B.E. Spencer... |
| yesterday.. so boys had to say that gravity does | | | | A Closer Look at Trajectories |
| not effect a bullet fired from a gun, because the | | | | Newton's first law says that the bullet will continue |
| speed is so high that gravity does not act on it.. | | | | to travel on a straight line forever if no forces |
| so the bullet travels horizontally.. (does this mean | | | | act upon it. But the bullet falls, so there is a pull |
| it escaped the gravitational force?).. butthe fact.. | | | | and it is gravitational force which is pulling it.. |
| A bullet is a projectile and as such, its horizontal | | | | So.. when you get to shoot something.. make |
| motion is unrelated to its vertical motion. Just | | | | sure you keep in mind that gravitational force |
| because it is moving rapidly in the horizontal | | | | acts on the bullet and shoot accordingly.. |
| direction does not mean that it will fall any slower | | | | Updated after the first comment :) |
| than an object that is not moving horizontally. | | | | Sights on guns are used to adjust for the effects |
| They still fall with the acceleration due to gravity | | | | of gravity on a bullet. When you set the sights on |
| (). (source) | | | | a gun, you must set them for the range you are |
| Here is a excellent example given by Joy Wagon... | | | | likely to be shooting from. Basically what you are |
| The Monkey and the Gun | | | | doing is adjusting the "Line from sights" to cross |
| We can't see the fall of a bullet because it | | | | the "Bullet path" at the distance you will likely be |
| happens so quickly that your eye cannot catch it. | | | | shooting from. Beyond this length, your bullet will |
| The trajectory from the point where the bullet | | | | hit low, closer than this length, your bullet will hit |
| comes out of muzzle and the point it hits the | | | | high. This also only sets your gun correctly for |
| target is not horizontal but a curve (practice | | | | level ground. If you shoot down from a hill, your |
| makes your brain calculate this gravitational pull, | | | | bullet will hit high or if you shoot up a hill |
| similar to a ball you throw to hit a target).. so | | | | (dangerous practice) your bullet will hit low. |