Newton's Laws Review

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 does the coefficient of static friction represent?

Back

The ratio of the maximum static frictional force that prevents motion to the normal force acting on the object.

Front

What does the coefficient of kinetic friction represent?

Back

The ratio of the frictional force acting on a moving object to the normal force acting on it.

Front

What is the net force acting on an object moving at constant velocity?

Back

Zero, because all forces acting on the object are balanced.

Front

Define mass in physics.

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 the mass of the object multiplied by the acceleration due to gravity (W = mg).

Front

What is tension force?

Back

Tension force is the force transmitted through a string, rope, or cable when it is pulled tight by forces acting from opposite ends.

Front

What is friction?

Back

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

Front

What is the difference between static and kinetic friction?

Back

Static friction acts on objects at rest and prevents them from starting to move, while kinetic friction acts on moving objects and opposes their motion.

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 (F = ma).