just a simple doubt....... why is the units of gravitation m/s^2 and why not m/s?
Well, the thing is that g, acceleration due to gravity, is measured in given units, m/s^2. This is so because as we know acceleration is the rate of speed change, it shows how the speed is changing per unit of time. We know that speed is measured in m per second. Therefore acceleration is measured in m/s per second which is m/s^2.