Contrary to average velocity the instantaneous velocity tells us the rate of change at which a given object is moving along a certain path at a given instance of time which usually tends to be infinitesimally small. R d t. Water velocity is the speed at which the water flows in a pipe while the flow rate is the amount of water that is moving in the pipe.
For example the velocity of a train traveling 1500 kilometers eastward from San Francisco in 12 hours would be 1500 km divided by 12 hr east or 125 kph east.
Now recall the formula which is velocity displacement time. For example if the object weighs 30 kg and has a force of 15 N applied to it then the acceleration would be 4 ms. If you want to put this rule down in the form of a mathematical formula the velocity equation will be as follows. Now put the values in the formula.