A rocket is fired in deep space where gravity is negligible

Question

Question: A rocket is fired in deep space, where gravity is negligible. If the rocket has an initial mass of 6100kg and ejects gas at a relative velocity of magnitude 2000m/s,

Part A: How much gas must it eject in the first second to have an initial acceleration of 26.0m/s²?

Please show your all work and steps to find how much gas it must eject in the first second.