Thread: Formula values and transposition

Hi,

I have just sumitted a maths paper and one question has given me sleepless nights and I'm after advice:

The question:

Show that x = v₁ + 1/2 at²

if v₂ = v₁ + at and x = (v₁ + v₂) t

-----------

2

I hadn't got a clue where to even start and made a complete hash of it!

Any advice where I should of started or what I should of done would be great.

Thanks

These are, almost, the equations of motion of a body moving with a constant acceleration.

The first equation is wrong, it should be

Multiply the third equation by 2, and solve for ; multiply the second equation by and substitute the .

Thanks.... but the 1 over 2 bit I am a little confussed over.... does it mean the square root of a?

It's been way to long since I have done this my brian is a little rusty!

Your brian might well be rusty but I think you should be more worried about your brain.

means multiplied by a half.

Thanks again..... I did a half of at^[2] which has given me the same answer luckily!