Nitin Kumar

Kinetic Energy is the energy associated with any body/particle because of its motion. Lets say there is a particle having mass 'm' and moving with speed 'v' then the kinetic energy it will have is (KE = 1/2*(m*v*v)). Apart from KE a particle can have Potential Energy as well if its under influence of any field( gravitation, electrical or magnetic). Assuming only gravitational field and that too using assumption that particle is very near to earth surface ie. it is at height 'h' from ground( h is very very less than that of radius of earth) in that case that particle will have PE = mass*acceleration due to gravity* height = (m*g*h). So in Short any particle will have total energy which will be sum of its KE and PE Total Energy = KE + PE = (1/2*m*v*) + m*g*h; when we consider presence of gravitational field only.