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I am stuck on a Maths Mechanics M1 kinematics questions. watch

1. (Original post by notnek)
A slightly different method to what's already been suggested:

If you say 't' is the time from when the second particle passes through O then at t = 0, the first particle will have been travelling for 5 seconds i.e. t + 5. So you get

Second particle:

u= 3
a = 5.4
t = t

First particle:

u = 0
a = 3.2
t = t + 5

Then you can equate the two displacements.

EDIT : Well it hadn't been suggested before I started writing this post
Again I have tried this, but got an unsolvable eqn.
2. (Original post by Raeve)
Again I have tried this, but got an unsolvable eqn.
3. (Original post by notnek)
EDIT : Well it hadn't been suggested before I started writing this post
4. (Original post by notnek)
(1.6t^2 + 16t + 40)
and 3t+2.7t^2

I equated them and put everything on one side to get:

1.1t^2-13t-40=0

am I doing this wrong?
5. (Original post by Raeve)
(1.6t^2 + 16t + 40)
and 3t+2.7t^2

I equated them and put everything on one side to get:

1.1t^2-13t-40=0

am I doing this wrong?
That's correct. You can use the quadratic formula to solve it.
6. Oh wow. I have been doing it right for the last 2 hours but using an online calculator online which didn't solve it correctly... haha. Thanks for you help!

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Updated: January 15, 2017
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