When combustion reactions occur inside a rocket's engine, a lot of heat and pressure are released. the pressure gradient is much larger inside the rocket than outside, which causes the gaseous products to rush out of the rocket. what does this create?

The answer is thrust. The action is the fuel mass being pushed outside of the rocket booster at a fast rate while the reaction is the rocket pushing forward. The force creates Thrust.

Apex answer ,

 Thrust

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.