Applied Mechanics and Graphic Statics
Pick up the correct statement from the following. The kinetic energy of a body

Remain constant
Before impact is less than that after impact
Before impact is more than that after impact
Before impact is equal to that after impact

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

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