There are several factors that can contribute to the speed of an object, including its mass, shape, and the surface it is moving on. In general, slimmer objects tend to go faster than objects with more structure because they offer less resistance to movement, which allows them to accelerate more quickly and reach higher speeds.
One factor that can affect the speed of an object is its mass, or the amount of matter it contains. All other things being equal, an object with a lower mass will tend to be faster than an object with a higher mass, because it has less matter to move and therefore requires less energy to accelerate.
Another factor that can affect the speed of an object is its shape, or the way it is structured. Slimmer objects tend to be more streamlined, meaning they have a shape that allows them to move through the air or water with less resistance. This can allow them to go faster than more structured objects, which may have a shape that creates more drag or resistance to movement.
Finally, the surface an object is moving on can also affect its speed. For example, an object moving on a smooth, flat surface may be able to go faster than an object moving on a rough or uneven surface, because the smooth surface offers less resistance to movement.
Overall, the speed of an object is determined by a combination of these and other factors, including the force applied to the object and the level of resistance it encounters. Slimmer objects tend to go faster than objects with more structure because they offer less resistance to movement, which allows them to accelerate more quickly and reach higher speeds.