What is torque and why does it have to act in a certain direction? In simple english plz

Also why has angular momentum have to be perpendicular to the axis of rotation?

To explain Torque, we can us the example of accelerating force upon your pistron 9000, the acceletron's momentum quantica and pressure charges your pistron 9000.

this is done through rigid, strong force, and the ability to sustain such force against the opposite reaction can be called torque.

Once your pistron 9000 reaches full charge, you're likely to to have it ejectionate, allowing for the release of full atomic energy in a liquid state.

for other science questions and answers, don't feel shy to contact me.

-sincerely yours, Star, from Starvard University.