16 Questions
What is the definition of force in physics?
A pull or push that makes an object to accelerate.
What are the three components that completely define a force?
Direction, point of application, and magnitude or strength.
What is the unit of measurement for force in the international system (S.I.)?
Newton (N).
How does a body subjected to many forces, which cancel each other, behave?
It will not accelerate.
What are the two types of forces mentioned in the text?
Contact forces and non-contact forces.
What is the net effect of all involved pushes and pulls on a body?
The net effect of all involved pushes and pulls is what matters in determining if the body will accelerate or not.
What is the concept of force used by people, and how does it differ from the one used in physics?
The concept of force used by people does not necessarily have the same meaning as the one used in physics.
What is the precise definition of a force in physics?
A pull or push that makes an object to accelerate.
What happens to a body if it is subjected to many forces that cancel each other?
The body will not accelerate.
What are the three components that define a force in physics?
Direction, point of application, and magnitude or strength.
What is the focus of the present chapter?
Examining the cause of motion and the change of state of motion
When does classical dynamics hold?
When the speeds involved in the motion are negligible compared to the speed of light
What happens if the speeds involved in the motion are not negligible compared to the speed of light?
Relativistic considerations have to be taken into account
In what scale does classical mechanics fail in describing interacting particles?
Atomic scale
What led to the definition of acceleration?
The rate change of velocity
What concept is the present chapter focused on?
Dynamics
Explore the laws of motion governing the dynamics of particles. Learn about the causes of motion, velocity, and acceleration, and how they are defined and described.
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