CIE A Level Physics复习笔记2.1.1 Displacement, Velocity & Acceleration

Scalar quantities

• Remember scalar quantities only have a magnitude (size)
  • Distance: the total length between two points
  • Speed: the total distance travelled per unit of time

Vector quantities

• Remember vector quantities have both magnitude and direction
  • Displacement: the distance of an object from a fixed point in a specified direction
  • Velocity: the rate of change of displacement of an object
  • Acceleration: the rate of change of velocity of an object

Equations

Equations linking displacement, velocity and acceleration