Question

A rocket burns fuel at a rate of 264 kg/s and
exhausts the gas at a relative speed of 8 km/s.
Find the thrust of the rocket.
Answer in units of MN.

Answer 1

Answer:

2.112 MN

Explanation:

Force = mass × acceleration.  Each second, 264 kg of gas is accelerated from 0 to 8 km/s.

F = ma

F = m Δv / Δt

F = 264 kg × (8000 m/s − 0 m/s) / 1 s

F = 2,112,000 kg m/s²

F = 2.112 MN

Round as needed.