Newton's Laws

Front

What is friction?

Back

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

Front

In which direction does friction act in relation to movement?

Back

Friction acts in the opposite direction of movement.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What factors determine the amount of inertia an object has?

Back

The mass of the object; greater mass means greater inertia.

Front

What does Newton's 1st Law state?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What does Newton's 2nd Law state?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F = ma).

Front

What does Newton's 3rd Law state?

Back

For every action, there is an equal and opposite reaction.

Front

How do you calculate mass using force and acceleration?

Back

Mass (m) can be calculated using the formula m = F/a, where F is the net force and a is the acceleration.

Front

What are the two main factors that determine the amount of friction between two objects?

Back

The amount of force pressing the two surfaces together and the roughness of the surfaces.

Front

What is the formula for calculating net force?

Back

Net force (F) is calculated as the mass (m) of an object multiplied by its acceleration (a): F = ma.