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# m1 mechanics help watch

A particle is moving in a straight line with a constant acceleration covers 10m in 2 seconds and 22m in a further 2 seconds. How much further does it travel in the next two seconds?
2. You can find the acceleration with suvat and simultaneous equations. You have 2 distances and 2 times.
3. (Original post by an_atheist)
You can find the acceleration with suvat and simultaneous equations. You have 2 distances and 2 times.
Yes but I did that and my answer dosent look right the distance is too big considering its only two more seconds?
4. (Original post by mk_cbc)
Yes but I did that and my answer dosent look right the distance is too big considering its only two more seconds?
5. (Original post by an_atheist)
I got 86..seems wrong.
6. (Original post by mk_cbc)
I got 86..seems wrong.
I got 34m in the next 2 seconds.
Could you show me your method?
7. (Original post by an_atheist)
I got 34m in the next 2 seconds.
Could you show me your method?
well I used s=ut+1/2at^2

in the first equation I used t=2 s=10
in the second equation I used s=22 and t=4
then i subsituted the answer for these into t=6
Im guessing i made a mistake somewhere.
8. (Original post by mk_cbc)
well I used s=ut+1/2at^2

in the first equation I used t=2 s=10
in the second equation I used s=22 and t=4
then i subsituted the answer for these into t=6
Im guessing i made a mistake somewhere.
10=2u+2a
22=4u+8a
20=4u+4a (times top one by 2)
2=4a
a=0.5
u=4.5
s=4.5*6+0.5*36*0.5=27+9=36m, walking through each step
9. (Original post by an_atheist)
10=2u+2a
22=4u+8a
20=4u+4a (times top one by 2)
2=4a
a=0.5
u=4.5
s=4.5*6+0.5*36*0.5=27+9=36m, walking through each step
Thank youuuu i seee where i went wrong so in the end do you just do 36-22 to find out of much more the particle travelled
10. (Original post by mk_cbc)
Thank youuuu i seee where i went wrong so in the end do you just do 36-22 to find out of much more the particle travelled
yes

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