Kinetic energy is the energy an object possesses due to its motion. In order to propel an object, a certain amount of kinetic energy is needed to overcome the object's inertia and accelerate it forward.
The amount of kinetic energy needed depends on the mass and speed of the object. The heavier the object and the faster it needs to move, the more kinetic energy is required.
The formula for calculating kinetic energy is KE = 1/2 * m * v^2, where m is the mass of the object and v is its velocity. By plugging in these values, you can determine the amount of kinetic energy needed to propel the object.
No, not all of the kinetic energy is converted into propelling the object. Some energy is lost due to friction, air resistance, and other external forces. This is why the initial amount of kinetic energy needed may be greater than the final amount actually used to propel the object.
Yes, kinetic energy can be increased or decreased as the object is being propelled. If the object's speed increases, its kinetic energy will also increase. If the object encounters resistance or slows down, its kinetic energy will decrease.