Forces - Physics 8

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Front

What is Newton's Second Law of Motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. It can be represented by the formula F = m x a.

Front

What is Newton's Third Law of Motion?

Back

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

Front

What is the formula to calculate force?

Back

F = m x a, where F is force, m is mass, and a is acceleration.

Front

What is mass?

Back

Mass is a measure of the amount of matter in an object, typically measured in kilograms.

Front

What is weight?

Back

Weight is the force exerted by gravity on an object, calculated as weight = mass x gravitational acceleration (W = m x g).

Front

What is friction?

Back

Friction is the force that opposes the motion of an object in contact with a surface.

Front

What factors affect the force of friction?

Back

The force of friction depends on the nature of the surfaces in contact and the normal force acting between them.

Front

What is the coefficient of friction (μ)?

Back

The coefficient of friction is a dimensionless number that represents the ratio of the force of friction between two bodies and the force pressing them together.

Front

How do you calculate the force of friction?

Back

The force of friction can be calculated using the formula: F_friction = μ x N, where N is the normal force.