So u r a science student, Congrats! and wondering what physics, chemistry got to do with mercantalism or business. I am sorry to state but "u are not a science student" , a science grad use logic and knows that physics laws or chemistry laws or even maths, all are based on observation and logic like that mercantile law too is also based on everyday life. sorry if u didn't find it s*xy enough with fancy equations and lusty diagrams. But the truth is,mercantile law is easy only if you get out of the misconception that you will find it difficult because you have studied law of motions and your brain just wouldn't accept law of contract.
I know that u are a maths student and will now want to proved my point so here is the formula, a sureshot formula to sail through Mercantile law:
Reading with a pencil + Marking keywords + use Logic to understand + read again at least 3 times + Solve MCQ = Success in M.Law
Assumptions: U have already thrown away your misconception and have started using logic.