Unit 1: Forces and Interactions

Front

What is sliding friction?

Back

Sliding friction is the force that opposes the motion of an object as it slides over a surface. It occurs when two surfaces are in contact and one slides over the other.

Front

What are balanced forces?

Back

Balanced forces are equal forces acting on an object in opposite directions. They do not cause a change in the object's motion.

Front

What is static friction?

Back

Static friction is the frictional force that acts on objects that are not moving. It prevents an object from starting to move when a force is applied.

Front

What is a force?

Back

A force is a push or pull exerted on an object. It can cause an object to start moving, stop moving, or change direction.

Front

What is fluid friction?

Back

Fluid friction is the resistance encountered by an object moving through a fluid (liquid or gas). It affects how objects like boats or airplanes move.

Front

What is the difference between static and sliding friction?

Back

Static friction acts on objects at rest, preventing them from moving, while sliding friction acts on moving objects, opposing their motion.

Front

What is an example of unbalanced forces?

Back

An example of unbalanced forces is when one person pushes a box to the right with a force of 10 N, and another person pushes it to the left with a force of 5 N. The box will move to the right.

Front

How does friction affect motion?

Back

Friction opposes motion, making it harder for objects to move. It can slow down or stop moving objects and can also prevent stationary objects from moving.

Front

What is the role of friction in everyday life?

Back

Friction is essential in everyday life as it allows us to walk without slipping, cars to grip the road, and objects to stay in place.

Front

What happens when forces are unbalanced?

Back

When forces are unbalanced, the object will accelerate in the direction of the net force, causing a change in its motion.