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The subjunctive tense can be some what confusing at first, in fact it's technically a "mood" rather than a tense. Other moods include the indicative and the imperative. Where the indicative mood is...

For an SAQ (Short-Answer-Question) the best thing is to be as concise as possible, as you are aiming for a word count of about 250-300 words. What the examiners want is to be reading accurate information tha...

The linear momentum of a particle is defined as the product between the particle’s velocity (a vector) and the particle’s mass (a scalar quantity): p =m· v . The law of conservation of momentum states that t...

The fastest light can travel is when it is in a vacuum, where it travels at 3x10^8 metres per second. However, when light travels through another substance or material (another 'medium'), it gets slowed down...

First, be familiar with the equations of motion:s = displacementu = initial velocityv = final velocitya = acceleration (constant)t = time v = u + ats = ((u+v)t)/2s = ut + (at^2)/2v^2 = u^2 + 2as Second, iden...