Taking other forces into account, such as friction from aerodynamic drag or internal propulsion such as in a rocket, requires additional analysis. ![]() Because of the object's inertia, no external horizontal force is needed to maintain the horizontal velocity component of the object. The only force of significance that acts on the object is gravity, which acts downward, thus imparting to the object a downward acceleration. The study of such motions is called ballistics, and such a trajectory is a ballistic trajectory. This curved path was shown by Galileo to be a parabola. ![]() ![]() Projectile motion is a form of motion experienced by an object or particle (a projectile) that is thrown near the Earth's surface and moves along a curved path under the action of gravity only (in particular, the effects of air resistance are assumed to be negligible). Projectile Motion Calculator are physic/math calculator to find Horizontal velocity, Vertical velocity, Time of flight, Range of the projectile or Maximum height fast and easy.
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