resistance will be in newtons, this force is linked to the square of the velocity, ie if you go twice as fast you' ll encounter four times the resistance
The units for resistance is Ohm (Ω).The standard unit of resistance is the ohm (with a lower case 'o'), named after the German physicist Georg Simon Ohm.
The heart has to push blood around the body through a network of blood vessels which get smaller as they get further away - towards the peripheral parts and deeper into the tissues of all the body...