Physics Laws, Principles and Definitions Flashcards
Which law states that energy can neither be made or destroyed?
Law of Conservation of Energy
Which law states that, when two or more objects interact (collide/seperate), their total momentum remains constant, providing no external resultant force is acting on them.
Law of Conservation of Linear Momentum
Which law states that If an object A exerts a force onto another object B, then object B will exert that same force of equal magnitude in an opposite direction back onto object A.
Newton’s Third Law
Which law states that the resultant force acting on an object is the product of its mass and acceleration?
Newton’s Second Law
Which law states that an object will remain in its current state providing that an unbalanced external force is not acting on it.
Newton’s First law
Which law states that the extension of a string is directly proportional to the force, provided the force does not stretch the string beyond its electric limit.
Hooke’s Law
Which principle states that when a system is in equilibrium the sum of clockwise moments about a pivot is equal to the sum of anti-clockwise moments about the same pivot.
Principle of Moments
What is defined as the turning effect of a force, about a pivot, and is the product of the force and the perpendicular distance from the line of action of the pivot?
Moment of a Force
What is defined as the gravitational force acting on an object?
Weight
What is defined as the amount of matter in an object?
Mass
What is defined as the point through which the entire weight of an object seems to act?
Center of Gravity
What is defined as a push or pull which one object applies to another object?
Force
What is defined as the amount of mass per unit volume of an object?
Density
What is defined as length between two points?
Distance
What is defined as the rate of change of displacement?
Velocity
What is defined as the rate of change of distance?
Speed
What is defined as the ability to cause change or do work?
Energy
What is defined as the applied force multiplied by the distance moved in the direction of the force?
Work
What is defined as the stored energy of an object due to its position, structure or composition?
Potential energy
Which principle states that an object which is fully or potentially immersed in a fluid will experience an upward force (upthrust) which is equal to the weight of the fluid displaced?
Arxhimedes’ Principle
Which law states that, a floating body displaces its own weight of the fluid in which it floats?
Law of floatation
Which law states that, for a fixed mass of gas, at a constant temperature, the pressure of the gas is inversely proportional to the volume?
Boyle’s law
Which law states that, for a fixed mass of gas, at constant volume, the pressure of a gas is directly proportional to its temperature?
Pressure Law
Which law states that, at a fixed mass of gas, at a constant pressure, the volume of a gas directly proportional to its temperature?
Charles Law
