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

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

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Applied Mechanics and Graphic Statics
Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by

The diagonal of the parallelogram which does not pass through the point of intersection of the forces
Its longer side
The diagonal of the parallelogram which passes through the point of intersection of the forces
Its shorter side

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