A 15,000 kg rocket traveling at +230 m/s turns on its engines. Over a 6.0 s period it burns 1,000 kg of fuel. An observer on the ground measures the velocity of the expelled gases to be −1,200 m/s.

a). The rocket's velocity of the expelled gases:

b). The acceleration would be as follows:

Given that,

Velocity of rocket =

Time

Velocity of expelled gas = -1200 m/s

a). Rocket's velocity

b). Acceleration

∵

Learn more about "Velocity" here:

link

a) , b)

Explanation:

The problem is asking the rocket velocity and acceleration at t = 6 s.

a) The general equation of the rocket is:

b) The acceleration experimented by the rocket is:

gravititional force is a force that is acting around you, it is non-contactable and it is a force that pulls you to the core of the earth.

brainliest