Centre of Mass

Mass and Weight are never used synonymously

Mass is a vector

Weight is a vector

Weight differs from mass in that it takes into account the weight of gravity acting upon the mass of a body/object

For bodies or objects in which the force of gravity does not vary, the two "centers" are in the same place which is why centre of mass & centre of gravity are often used synonymously

Mass does not change with location

Weight will change when:

When a basketball player raises both of their hands while keeping both feet on the ground as they try to contest a layup, their centre of mass will:

Identify 2 factors that could make the base of support more stable

Identify 2 factors that could make the base of support more stable

If a gymnast performing a handstand is stable & stationary we can assume that the gymnast's line of gravity is:

The centre of mass is always inside the body

The centre of mass is the point at which a body will rotate about its axis when experiencing angular motion

Ex. A diver performing a somersault or a gymnast performing a cartwheel

The Fosbury Flop (the common high jumping technique used today) puts the centre of mass:

When a basketball player enters into a low defensive position, they raise their centre of mass and are therefore more stable

When a basketball player enters into a low defensive position, they lower their centre of mass and are therefore more stable

When a sumo wrestler enters into a low position, they lower their centre of mass and are therefore less stable

When a volleyball player begins to raise their arms above their head while performing a set, they raise their centre of mass and are therefore less stable

The Fosbury Flop technique enables high jumpers to clear greater heights because:

Base of Support