Newton's Laws and Momentum

Front

What is Newton's Second Law of Motion?

Back

Newton's Second Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. It can be expressed with the formula: F = ma (Force = mass x acceleration).

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity. It is a vector quantity, meaning it has both magnitude and direction.

Front

How do you calculate momentum?

Back

Momentum (p) is calculated using the formula: p = mv, where m is mass and v is velocity.

Front

What happens to momentum when the speed of an object is doubled?

Back

When the speed of an object is doubled, its momentum also doubles.

Front

What is the unit of momentum?

Back

The unit of momentum is kilogram-meter per second (kg-m/s).

Front

What is the difference between scalar and vector quantities?

Back

Scalar quantities have only magnitude (e.g., mass, temperature), while vector quantities have both magnitude and direction (e.g., velocity, momentum).

Front

What is Newton's First Law of Motion?

Back

Newton's First Law states that an object at rest will remain at rest, and an object in motion will remain in motion at a constant velocity unless acted upon by a net external force.

Front

What is Newton's Third Law of Motion?

Back

Newton's Third Law states that for every action, there is an equal and opposite reaction.

Front

If a 0.250 kg cart is moving at 0.400 m/s, what is its momentum?

Back

The momentum is 0.1 kg-m/s.

Front

What factors affect the momentum of an object?

Back

The momentum of an object depends on its mass and velocity.