Show how the equation for KE has units of joules.

The SI unit of kinetic energy is Joules.

Explanation:

The unit of work done is Joules.

Work done = Force × displacement

For units :

W = N×m

N is newton (unit of force) and m is metre

N = kg m/s²

⇒ W = kg m/s² × m

W = kgm²/s² (1)

Kinetic energy of an object is given by :

K = (1/2) mv²

For units :

K = kg× (m/s)²

K = kgm²/s² (2)

We know that, kgm²/s² = Joules

From equation (1) and (2), we find that both work done and kinetic energy have same unit i.e. Joules.

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.