One area for development is acing those physics paper 2 topics. Momentum was one of them. A lot of the time it will be questions about vehicles and objects that move and collide. It can also be things that are fired or launched, like sling shots. You need to gain confidence with the conservation of momentum questions by going through the theory. More importantly after that practice those situational exam questions so nothing surprises you. Get practicing! Your fate once you ace momentum - you’ll be cruising for an 8!!