Friction and Air Resistance

Front

What is friction?

Back

Friction is a force that opposes the motion of an object when it comes into contact with another surface.

Front

What is air resistance?

Back

Air resistance is a force that opposes the motion of an object as it moves through the air, pushing upward against falling objects.

Front

How do slippery pads help movers?

Back

Slippery pads reduce friction, making it easier to drag heavy objects like sofas over surfaces.

Front

Why do airplanes have sleek shapes?

Back

Airplanes have sleek shapes to reduce air resistance, allowing them to move more efficiently through the air.

Front

What happens when you slide a book across a desk?

Back

The book eventually stops due to friction between the book and the desk.

Front

What is the relationship between friction and motion?

Back

Friction opposes motion, meaning it can slow down or stop moving objects.

Front

What force acts on a falling object?

Back

Gravity pulls the object down, while air resistance pushes up against it.

Front

What is the effect of increasing surface area on air resistance?

Back

Increasing surface area generally increases air resistance, making it harder for objects to move through the air.

Front

How can you reduce friction between two surfaces?

Back

You can reduce friction by using lubricants, like oil, or by using smoother surfaces.

Front

What is the role of gravity in motion?

Back

Gravity is the force that pulls objects toward the Earth, affecting their motion and speed.