Friction and gravity

Front

What is friction?

Back

Friction is the force that two surfaces exert on each other as they rub against each other.

Front

What is gravitational force?

Back

Gravitational force is the force acting between any two objects in the known universe all the time.

Front

What type of friction do skateboard wheels experience?

Back

Skateboard wheels experience rolling friction.

Front

What causes a kicked soccer ball to stop?

Back

A kicked soccer ball stops due to friction.

Front

Which has more mass, Earth or the Moon?

Back

Earth has more mass than the Moon.

Front

What is the normal force?

Back

The normal force is the support force exerted upon an object that is in contact with another stable object.

Front

What is static friction?

Back

Static friction is the friction that exists between a stationary object and the surface it's on.

Front

What is sliding friction?

Back

Sliding friction is the force that opposes the motion of an object sliding over a surface.

Front

What is fluid friction?

Back

Fluid friction is the resistance encountered by an object moving through a fluid (liquid or gas).

Front

How does gravity affect objects on Earth?

Back

Gravity pulls objects towards the center of the Earth, giving them weight.