Derive an expression for the kinetic energy of an object of mass 'm' moving horizontally with a uniform velocity 'v'
they move with a certain initial velocity u and final velocity v
lets now consider the initial velocity as 0
we know that force = mass x acceleration or mxa
we also know that relating all the velocity and acceleration formula is v2 - u2=2as
or rewritten as s = v2-u2/2a
thus apply these in W = f x s
or we get W =m x a x v2-u2 / 2a {because s = displacement}
when we take u = 0 then u gets cancelled and strike out the a's we get w = 1/2 mv2