Rain drop having free fall. Am I right..? That is it get accelarated. Means, velocity changing... But. Terminal velocity is a constat velocity. Then how it happens..?
Best... Wavelets are the second generation of waves coming from the first wave front(primary wave front)... This is according to Huygens wave theory. I think this is the reflection of a plane wave by a plane surface..
In circular motion of any vehicles or any other particles, which experiences both centripetal and centrifugal forces... Why these two not cancelling?these are in equal and opposite.
From second law of motion, dP/dt propotional to F. i.e,m dV/dt propotional to F. To make this an equation,multiply with a constant. i.e,F=k m dV/dt. Where , k=1, then F=m dV/dt.
We know that, dV/dt=a. There fore, F=ma.