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We are going to present contact forces by Lucas, Xiomara, Cecilia, Javi, and Elena.

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Fraction. Fraction is a form that exists when two objects are in the opposite direction to the direction of movement.

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Fraction can be slowed down or stopped by a moving object.

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Buoyancy. Buoyancy is another example of a combat force. It is a force which acts directly to gravity.

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Ok, can you explain what have you done in your project?

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We do in the project, we do glass with ice cubes. They are like in the top because of buoyancy.

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Okay, in order to explain that. Okay, very good, very good. Do you want to tell us anything else? No? Okay.