Force, Motion, and Energy

Front

What is the definition of force in physics?

Back

A force is a push or pull exerted on an object.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object.

Front

How does friction affect motion on different surfaces?

Back

Friction varies with surface texture; for example, a hard wood floor has less friction than a carpet.

Front

What is the relationship between mass and force required to move an object?

Back

Heavier objects require more force to move than lighter objects.

Front

What is the effect of a push on an object?

Back

A push moves things away from you.

Front

What is the effect of a pull on an object?

Back

A pull moves things towards you.

Front

What are the two main types of forces?

Back

Contact forces and non-contact forces.

Front

What is an example of a contact force?

Back

Friction is an example of a contact force.

Front

What is an example of a non-contact force?

Back

Gravity is an example of a non-contact force.

Front

How does increasing the surface area of contact affect friction?

Back

Increasing the surface area of contact generally does not significantly affect friction; it is more dependent on the nature of the surfaces in contact.