AQA AS Physics paper 2, 6th of June, 2022Watch this thread
What was the answer? I was rushing near the end due to bad time management and ended up with something of the type 980000J. I find momentum before and equalled it to momentum after to find the joint velocity of the trucks. Then I did 1/2mv^2 with m being total mass of trucks and v being calculated speed after collision. I don't know if that's right.