Friction

Front

What is friction?

Back

Friction is a force that opposes the relative motion of two surfaces in contact.

Front

What are the two main types of friction?

Back

The two main types of friction are static friction (preventing motion) and kinetic (or sliding) friction (opposing motion).

Front

What is the static coefficient of friction?

Back

The static coefficient of friction is a measure of how much force is required to start moving an object at rest.

Front

What is the kinetic coefficient of friction?

Back

The kinetic coefficient of friction is a measure of the frictional force acting on an object in motion.

Front

Why is it harder to start an object sliding than to keep it sliding?

Back

Because the static coefficient of friction is greater than the sliding coefficient of friction.

Front

What is Newton's second law of motion?

Back

Newton's second law states that the force acting on an object is equal to the mass of the object multiplied by its acceleration (F = ma).

Front

How do you calculate force?

Back

Force can be calculated using the formula F = ma, where F is force, m is mass, and a is acceleration.

Front

What is the relationship between mass and acceleration in terms of force?

Back

As mass increases, for a constant force, acceleration decreases, and vice versa.

Front

What does it mean for forces to be balanced?

Back

Forces are balanced when the net force acting on an object is zero, resulting in no change in motion.

Front

What does it mean for forces to be unbalanced?

Back

Forces are unbalanced when the net force acting on an object is not zero, resulting in a change in motion.