Answer:

1.A force is a push or pull acting upon an object as a result of its interaction with another object. There are a variety of types of forces. Previously in this lesson, a variety of force types were placed into two broad category headings on the basis of whether the force resulted from the contact or non-contact of the two interacting objects.

2.Friction is the contact force between two objects moving against each other; the kind of surface that objects have affects how objects move against each other. Gravity is the force that pulls objects down slopes or makes them fall. A force can slow down or speed up an object.

Explanation:

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