Applied Mechanics and Graphic Statics
The centre of gravity of a homogeneous body is the point at which the whole

Volume of the body is assumed to be concentrated
Area of the surface of the body is assumed to be concentrated
All listed here
Weight of the body is assumed to be concentrated

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Applied Mechanics and Graphic Statics
A ball which is thrown upwards, returns to the ground describing a parabolic path during its flight

Kinetic energy of the ball remains constant
Horizontal component of velocity remains constant
Vertical component of velocity remains constant
Speed of the ball remains constant

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