Friction, Gravity and Force

Front

What is friction?

Back

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

Front

What type of friction is not moving?

Back

Static friction is the type of friction that occurs when an object is not moving.

Front

What type of friction exists between a surface and moving air?

Back

Fluid friction is the type of friction that occurs between a surface and moving air.

Front

What is the net force when forces are acting in the same direction?

Back

When forces are acting in the same direction, the net force is calculated by adding the forces together.

Front

What type of friction do wheels on a skateboard most likely experience?

Back

Wheels on a skateboard most likely experience rolling friction.

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, commonly experienced as the force that pulls objects towards the Earth.

Front

What is the formula for calculating net force?

Back

Net force = Total of all forces acting on an object.

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 rolling friction?

Back

Rolling friction is the force that opposes the motion of an object that rolls over a surface.

Front

What is the difference between static and kinetic friction?

Back

Static friction acts on objects that are not moving, while kinetic (or sliding) friction acts on objects that are in motion.