Newton's Second Law Flashcards

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is force?

A push or a pull

What does a force cause?

An object's motion to change

What are two ways an object's motion can be changed?

Change its direction, change its speed

What is another name for Newton's Second Law?

Law of Acceleration Signup and view all the answers

What does a change in direction or speed cause?

A change in the velocity of an object Signup and view all the answers

What is a change in the velocity of an object called?

Acceleration Signup and view all the answers

What does Newton's Second Law state?

The acceleration of an object is equal to the sum of the forces (net force) acting on the object, divided by the mass of the object. Signup and view all the answers

What is the equation for Newton's Second Law?

a = Fnet/m or Fnet = ma Signup and view all the answers

Acceleration is ______ proportional to Force.

Directly Signup and view all the answers

What does directly proportional mean?

Both variables do the same thing - either both increase or both decrease Signup and view all the answers

Acceleration is _____ proportional to Mass.

Inversely Signup and view all the answers

What does inversely proportional mean?

The variables do the opposite thing - one increases and the other decreases Signup and view all the answers

Acceleration of the object is in the direction as the force that causes ____.

Same, Acceleration Signup and view all the answers

What is the SI Unit for force?

Newton (N) Signup and view all the answers

What is a unit that can be measured directly called?

Fundamental Unit Signup and view all the answers

What is the derived unit for force?

kg m/(s^2) Signup and view all the answers

What is mass?

The amount of matter in an object Signup and view all the answers

What is weight?

A force that is affected by gravity Signup and view all the answers

If there is no gravitational force present, what happens to an object's weight?

An object would not have a weight Signup and view all the answers

What does weight change with?

The location of an object Signup and view all the answers

What is the weight equation?

Fw = mg Signup and view all the answers

Study Notes

Force

Defined as a push or pull that can change an object's motion.
The effect of a force can be seen in changes to direction or speed of an object.

Newton’s Second Law

Also known as the Law of Acceleration.
States that the acceleration of an object is determined by the net force acting on it divided by its mass.
Expressed in the equation: ( a = \frac{F_{net}}{m} ) or ( F_{net} = ma ).

Acceleration

Defined as the change in velocity of an object.
Acceleration is directly proportional to the net force: increasing force leads to increased acceleration, and vice versa.
Acceleration is inversely proportional to mass: increasing mass leads to decreased acceleration, and vice versa.
The direction of acceleration is the same as the direction of the force causing it.

Proportional Relationships

Directly proportional means variables move together; if one increases, the other does too.
Inversely proportional means one variable increases while the other decreases.

Units of Measurement

The SI unit for force is the Newton (N).
Fundamental units are measurable directly, while derived units combine fundamental units (e.g., momentum and energy).
The derived unit for force is expressed as kg·m/(s²) (kilogram meter per second squared).

Mass vs. Weight

Mass refers to the amount of matter in an object and remains constant regardless of location (e.g., Earth or Moon).
Weight is a force influenced by gravity and can change based on location.
The weight equation is expressed as ( F_w = mg ), where ( m ) is mass and ( g ) is the acceleration due to gravity.

Gravitational Influence

An object lacks weight in the absence of gravitational force.
Weight varies depending on the object's location in relation to gravity.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

Test your knowledge on Newton's Second Law with these flashcards. Each card includes key concepts such as force, acceleration, and how motion can change. Perfect for students looking to solidify their understanding of basic physics principles.