Hey!
Great job, thanks for the solutions!
One question though. For question 5 b) ii) (which leads me in to getting iii wrong).
Differentiating velocity we get:
2(16+t^2) - 4t^2 (please disregard the bottom for now)
= 32 + 2t^2 - 4t^2
= 32 - 2t^2 => -2(16+t^2)
on the bottom we have (16+t^2)^2 - can we not cancel these two out?
Hence, giving us -2t/16+t^2
I'm probably wrong, I just hope I get the marks for getting to the correct point...maybe the markers will disregard my simplification?
Leading in to iii), letting a = 0, the whole bottom goes bye bye as you can see with my simplification. So I said the particle is always accelerating
(one weird particle)
Great job, thanks for the solutions!
One question though. For question 5 b) ii) (which leads me in to getting iii wrong).
Differentiating velocity we get:
2(16+t^2) - 4t^2 (please disregard the bottom for now)
= 32 + 2t^2 - 4t^2
= 32 - 2t^2 => -2(16+t^2)
on the bottom we have (16+t^2)^2 - can we not cancel these two out?
Hence, giving us -2t/16+t^2
I'm probably wrong, I just hope I get the marks for getting to the correct point...maybe the markers will disregard my simplification?
Leading in to iii), letting a = 0, the whole bottom goes bye bye as you can see with my simplification. So I said the particle is always accelerating
(one weird particle)