"physical power" is correct and can be used in written English.
It is often used to refer to strength, muscle power, or influence. Example: His physical power was instrumental in winning the game.
Liverpool's physical power was notable throughout.
If Diouf caught the eye, Senegal's display was notable also for its physical power.
Lockett possessed immense physical power, more than many defenders had experienced or could cope with.
It seemed like he was staggered by the physical power of the vocal.
"She can easily fill a Broadway house with her vocal power and her physical power.
** Physical power, perhaps, but it's clear that there are other powers that need to be appeased.
"We abhor the abuse of power whether it is financial power, psychological power, physical power".
I want to know what it is to have physical power over men.
Physical power is still there, as the Huskies have demonstrated for the past two seasons.
The truly shocking aspect of Olivier's stage performance was his daunting physical power.
They were the iron, the physical power, the viciousness of the colony.
