Answer:

1. Sebastian and Pancho play tug of war - c. tension force

2. A glass falls off the table - d. gravitational force

3. A magnet attracts iron nails - a. magnetic force

4. A paper airplane travels through air - e. air resistance force

5. A plate on a table - b. normal force

Explanation:

Force is a push or a pull between two interacting objects. Force comes in many forms and is part of our day-to-day activities. Force can make objects move, change the motion, or the shape of objects. Its unit of measurement is in Newtons or N. Force can be classified as either contact force or non-contact force.

Contact force requires physical contact between two interacting objects. Some examples of contact forces are frictional force, tension force, air resistance force, or normal force. Tension force is evident when an object is pulled in opposite directions just like during tug-of-war. The normal force is the force that balances the weight of an object. For instance, as you place a plate on the table, the weight of the plate is balanced by the upward force of the table on the plate. This upward force is the normal force. The frictional force is evident in objects that rub against each other. Air resistance force is the frictional force on objects that are in the air. An example is the paper airplane that travels through the air.

Non-contact force, on the other hand, does not require contact between the interacting objects. It is the force at a distance. Some examples of non-contact force are gravitational, magnetic, or electrical forces. Gravitational force is the downward pull or force of the earth. This allows objects and us on the ground and what makes things fall. Magnetic force, on the other hand, is the force exerted by magnets. Electrical force is the force exerted by charged particles.

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