Dynamics Flashcards
Define Mass.
The mass of a body is a measure of its resistance to change in state of motion.
Define Momentum.
The momentum of a body is defined as the rate of change in the momentum of Y produced by X.
Define Force.
The force exerted by X on Y is defined as the rate of change in the momentum of Y produced by X.
Define Impulse.
The impulse of a force is defined as the product of the force and the time of impact of the force.
What is Newton’s First Law of Motion?
The newton’s first law of motion states that in the absence of resultant external force acting on it, a body at rest will remain at rest and a body in motion will continue its motion at constant velocity.
What is Newton’s Second Law of Motion?
Newton’s second law of motion states that the rate of change in the momentum of a body is proportional to the resultant external force that acts on it, and the change in momentum is in the direction of the force.
What is Newton’s Third Law of Motion?
Newton’s third law of motion states that when a body A exerts a force on body B, B exerts a reaction force on A that is equal in magnitude and opposite in direction to the action force.
What is a non-contact force?
It is a force that are exerted by force fields and do not require physical contact between interacting bodies.
What is a Contact Force?
It is a force that is exerted by bodies in physical contact and act through the surface of contact.
What is the principle of Conservation of Momentum.?
The principle of conservation of linear momentum states that in the absence of external forces, the total momentum of bodies in a system remains constant.
