# Forces Summary Force Contact force Non contact force

• Slides: 17

Forces

Summary �Force �Contact force �Non - contact force �The force of gravity �Friction �Air resistance force �Tension force �Questions and answers �Games �Videos

Forces A force can be a push or a pull. It is not something you can see or touch, but can see it in action. The unit of force is called the Newton.

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Contact force In physics, a contact force is a force that acts at the point of contact between two objects. Contact forces are described by Newton's laws of motion, as with all other forces in dynamics.

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Non – contact force A non-contact force is a force applied to an object by another body that is not in direct contact with it. The most familiar example of a non-contact force is weight.

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The force of gravity is the force exerted by the gravitational field of a massive object on any body.

Air Resistance Force The air resistance force is a special type of frictional force that acts upon objects as they travel through the air.

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Tension Force �The tension force is the force exerted by a compressed or stretched spring upon any object that is attached to it.

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Questions and answers �What is a contact force? �A contact force is a force that acts at the point of contact between two objects, in contrast to body forces. �What is a non contact force? � A non-contact force is a force applied to an object by another body that is not in direct contact with it.

Games �Forces

Videos �What is a force? �What is gravity? �Types of forces

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