Weight And Mass Flashcards
What is mass?
The amount of matter an object contains
What is weight?
The force exerted on an object by virtue of its position in a gravitational field
What is inertia?
Difficult to change motion (resistance changes)
What is mass and weight measured in?
Mass - kilograms (Kg)
Weight - newtons (N)
Do they change with location?
Mass changes but weight stays the same with location
What is gravity?
Pulls you and objects to the centre of the planet. Keeps the earth and other planets orbiting the sun. Also known as weight.
What relationship does mass and weight have?
The greater the mass, the greater the weight
What is Newton’s second law?
The relationship of force, mass and acceleration mathematically.
What is the equation of the second law?
Force = mass x acceleration
F = ma
What unit of measurement is acceleration and mass?
Acceleration - m.s -2 in exponent
Mass - kilograms (if in grams must convert to kilograms)
Why are newtons 9,8 times the mass?
Due to the gravity the earth exerts on objects
What is the formula of the relationship between mass and weight?
Weight = mass x 9,8
F = mg
