EVERYDAY SCIENCE

Detailed explanation-1: -Speed has the dimensions of distance divided by time. The SI unit of speed is the metre per second (m/s), but the most common unit of speed in everyday usage is the kilometre per hour (km/h) or, in the US and the UK, miles per hour (mph). For air and marine travel, the knot is commonly used.

Detailed explanation-2: -Units of Speed Time and Distance Time can be generally expressed in terms of seconds(s), minutes (min) and hours (hr). Whereas the distance is generally expressed in meters (m), kilometres (km), centimetres, miles, feet, etc. Speed is commonly expressed in m/s, km/hr.

Detailed explanation-3: -unit of speed is the meter per second (m/s).