Scalars and Vectors
Quantities are simply things you can measure, like how long your phone is or how much time you spend on homework. But not all quantities work the same way!
Scalar quantities only have size (magnitude) - think of them as just numbers. Speed, energy, and time are all scalars. When you say "I ran 5 km/h," that's a scalar because you're only giving the size.
Vector quantities have both size AND direction, making them much more detailed. Displacement, velocity, and acceleration are vectors. There's a big difference between distance (scalar) and displacement (vector) - distance is how far you actually travelled, whilst displacement is how far you ended up from your starting point in a straight line.
Quick Tip: Remember vectors with "direction" - both words start with 'D'!
