GCSE Glossaries and Facts

Typical values and facts that you need to know

Gravitational Field Strength on Earth = 9.8 N/kg

Acceleration due to gravity on Earth = 9.8 m/s²

Typical values

walking speed = 1.5 m/s

running speed = 3 m/s

cycling speed = 6 m/s

reaction time = 0.2 to 0.9 s

speed of sound = 330 m/s