Question

the solid rocket boosters and the main engines on the orbiter provided the thrust, or push, for launch. based on the highlighted context clues, what is the definition of thrust? a back and forth movement path around a star, planet, or moon a forward or upward force a firm and stable shape

Explanation:

The sentence uses the word "or" to give a synonym for "thrust". The synonym provided is "push". A push in the context of rocket launch (where rocket boosters and engines are involved) is a forward or upward force.

Answer:

a forward or upward force