For an object subject to only the forces of weight and drag, there is a characteristic velocity which appears in many of the equations. On this page, we assume that the horizontal force is much less than the vertical. and we would need to use more equations to describe its motion. The curvature of the earth will cause the projectile to land slightly later, as it has to travel further around the earth. Unlike the ballistic flight equations, the horizontal equation includes the action of aerodynamic drag on the rocket. The time for this effect to take place is the length of time of the flight of the projectile. At the same time, the horizontal component, being unaffected by gravity, will dictate how far away from the starting point the projectile will land.Īir resistance will affect both of these, so the projectile will not travel as far, and will land sooner. Hence, the projectile will hit the ground when gravity's interaction with the vertical component causes the height to return to zero. The only movement that is affected by a force (gravity) is the vertical one. A particle's horizontal and vertical projectile motions are accelerated in the following ways: When a particle is sent into the air at a certain speed, gravity's acceleration is the only force acting on it during that period (g). In that case, the horizontal movement of the projectile will stay exactly the same as it was when it started, because no force affects it. Now let's take an ideal case, where we ignore the resistance of the air, and assume the ground is a perfectly flat plane, not a globe like the earth. Although the equations of motion can be integrated directly, the dependence of time of flight from the constant of resistance per unit mass of the projectile is. You can decompose the initial movement of the projectile into 2 components, one horizontal, the other vertical.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |