Question

identify which type of force matches each definition.
a force that resists an objects motion through air
an attractive force between objects that have mass
a force exerted by a person, animal or machine
a force that resists the motion of one object relative to another object
a force that occurs when a springy object is squashed or stretched
a force exerted on some metals, such as iron and nickel
a force that pulls inward when a solid object, such as a rope, is stretched

Explanation:

• For "A force that resists an object’s motion through air", air resistance is the force that acts opposite to the direction of an object's motion through the air.
• "An attractive force between objects that have mass" is gravity. According to Newton's law of universal gravitation, every mass attracts every other mass.
• "A force exerted by a person, animal or machine" is an applied force as it is a force that is applied by an external agent.
• "A force that resists the motion of one object relative to another object" is friction. Friction acts at the interface of two objects in contact.
• "A force that occurs when a springy object is squashed or stretched" is elastic force. Hooke's law describes the relationship between the deformation of an elastic object and the force exerted.
• "A force exerted on some metals, such as iron and nickel" is magnetism. Magnetic materials like iron and nickel are affected by magnetic fields.
• "A force that pulls inward when a solid object, such as a rope, is stretched" is tension. Tension is the force transmitted through a string, rope, or similar object when it is pulled tight.

Answer:

1. air resistance
2. gravity
3. applied
4. friction
5. elastic
6. magnetism
7. tension