Basic advice for students who are struggling with Physics.
Physics is a notoriously difficult subject. Many students have a tendency to memorize concepts in physics without understanding. I think that when students really try to understand and solve difficult physics problems.
Firstly, try to understand the situation. (Ask which chapter is this from? What concepts are being tested? Naturally, ideas that have been taught will resurface as the student re-associates the problem with his knowledge)
Next, read the questions carefully before organizing the information and ALWAYS draw a diagram if possible!
From the information available, choose the right formula to apply.
Check that units and significant figures are correct.
Learning physics the right way helps to attain a unique problem solving skill that many industries (commerce, banking and finance) are looking out for. Encourage your students to understand the problem instead of repetitive rote learning!
This skill will then take them far in their academic life 
Source: NUS Physics Graduate