AQA M1 Jan 2012 Q8

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AQA Mechanics 1 exam paper on projectiles
  1. Mohammed Ladak
  2. Screencast-O-Matic.com
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Автор

Sorry, could you explain how you derived the initial velocity? So when we work out projectiles, we get the initial velocity using trig?

NurAlayat
Автор

We usually split the initial velocity into a horizontal and vertical component.. This was a different question than most of the exam questions on projectiles (I liked it!) as we needed to work out the angle of the projectile ourselves. Usually, we are told the angle.. Check out my website MathedUp! (link is on my channel) for further help with projectiles if you are unsure..

mathedup
Автор

I used suvat equations on question B and not the quadratic formula. Because it's awkward to isolate the t in s=ut+1/2at^2 I calculated the velocity using v^2=u^2+2as then with my additional value I used v=u+at...t=(v-u)/a. Would I lose marks for this method?

georgethomas