Question

which term describes the amount of thrust created per unit of mass of an engine and fuel?
a. trajectory
b. thrust
c. specific impulse
d. engine specs

Explanation:

Specific impulse is defined as the thrust produced per unit mass of propellant (engine fuel) consumed, which directly matches the description in the question. Trajectory refers to the path of a moving object, thrust is the total force generated, and engine specs are general specifications of an engine, none of which fit the definition provided.

Answer:

C. Specific impulse