Work and Kinetic Energy
Unit of work is unit of energy i.e joule
(J)
hence
1 J = 1 N m
F cos θ = m a (F =
constant) a = F cos θ/m ( a = constant)
v2 = v02 + 2 a d
½ m v2 – ½ m v02 = F d cos θ
Kf – Ki = Δ K = W
W = F d cos θ = F. d
W = F d cos θ = F. d
Δ K = W