what is allowed in projectile motion calculations? (1 Viewer)

[considerthis215]

for those of you who do 3 unit maths you would know that we cover projectile motion in a much better way when compared to physics by actually deriving the formulas rather than just plugging in number in the given formulas..

does anyone know if we are allowed to use the 3 unit method of solving projectile motion questions rather than having to use all the physics equations?

 

[lolokay]

so you won't have to remember them/look them up I suppose
though it's not like there's many that you'd need to remember anyway

 

[henry08]

Do it however you like so long as you get the correct final answer. However deriving the formulas would just be unnecessary work,. not to mention that you're more likely to screw it up.

 

[Almatari]

Although the physics equations can be derived from maths equations, it is not required by the syllabus, so don't do it.

The physics and maths syllabus require different ways of solving the problem, and that is what the markers expect. So NEVER use the "maths method" for a physics problem or vice versa.

 

[Rachaek]

Technically you are 'allowed' to use the maths method to solve the physics questions, in that if you get the right answer you will get your marks (or so I am told). However, you are not 'allowed' to use the physics method for maths, and will get no marks (or few marks) regardless of whether your answer is correct or not (it is useful for checking your answers though)

That said, the maths method is unnecessary and takes up more time. But if you feel more comfortable with the maths way, and have enough time you are allowed to, but are not expected to.

Also, often the physics questions are different to the maths ones, and are usually deliberately made to be very difficult to solve using the 'maths method' that is taught in 3 unit.

 

[milolamb]

Hmm, you can use Mathematics formula's but if your in 3 unit you should be able to remember 5 simple physics equations..

 

[L]

some of the harder ones include the incline plane