motion

• distance is the lenght between two points along a chosen path

  SI unit: m, symbol: s
• displacement is the disstance covered in a straight line in a specific direction, measured in metres

  symbol: s, SI unit: m
• speed is the distance covered per unit time, measured in metres per second (m/s), symbol: s
• velocity is defined as distance travel per unit time, SI unit: m/s, symbol:v
• acceleration is the change in velocity per unit time

  uniform acceleration-a moving body velocity or speed increase equally in time interval
• uniform deceleration- when a body velocity or speed is decreases equally in time interval
• Gradient= speed

  =y2 - y1/x2 - x1
• Acceleration = gradient
• Distance travelled= area under graph =½ ×b × h /l ×w× h