An aeroplane of mass 30000kg produced a force of 20kN to get it to accelerate to 50m/s so it could take off. Calculate the amount of time it was accelerating for Will mark branliest! Need working out aswell!

Explanation:

The impulse-momentum theorem states that the impulse of an object is equal to the change in momentum of that object:

.

Impulse is also given by where is the average net force and is change in time.

Therefore, we can set both equations equal to each other and solve:

.

Assuming that the airplane was initially at rest, its change in momentum is:

Impulse is represented using . Therefore, convert to Newtons:

Thus:

.

answer: b.

explanation: