Please answer the following question: The rocket goes upwards because the hot gases shoot downwards out of the nozzle. The faster the gases go downwards, the faster the rocket goes upwards.  Having read the above passage, choose the right answer to the following question (choices are increase or decrease ):   If John increases the rate at which gas exits the bottom of his rocket, what will happen to the upward momentum of the rocket? It will increase or decrease?
Answer:
increase