Unit 4 Vocab Flashcard

Front

What is the study of how forces affect the motion of objects and systems called?

Back

Dynamics.

Front

What is Newton's second law of motion mathematically defined as?

Back

F_net = ma, where F_net is the net external force, m is mass, and a is acceleration.

Front

What are the various forces that may impede a rolling vehicle, including axle friction and drag, known as?

Back

Rolling resistance.

Front

What is a force acting on an object or system that originates outside of the object or system called?

Back

External force.

Front

What do we call one or more objects of interest for which only the forces acting on them from the outside are considered?

Back

System.

Front

What is the term for the resistance encountered by a rolling object due to surface imperfections and deformation?

Back

Rolling resistance.

Front

What principle states that the acceleration of an object is directly proportional to the net force acting on it?

Back

Newton's second law of motion.

Front

What is the difference between internal and external forces in a system?

Back

Internal forces act between objects within the system, while external forces act on the system from outside.

Front

What is the significance of the net external force in determining an object's motion?

Back

It determines the acceleration of the object according to Newton's second law.

Front

How does mass affect the acceleration of an object when a net force is applied?

Back

Greater mass results in less acceleration for the same net force, as per F_net = ma.