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Please Help Me With This Physics Exercise

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mufarrid | 03:41 Mon 27th Dec 2021 | Science
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The coordinates of particles in meters per second are given by v(t)=12t-3t where the time is in seconds. The particle is momentarily at rest at t=?
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What does your school say about cheating?
Is the q right? 12t -3t = 9t so have you missed something out is it t sqaured, and is it coordinates or velocity/speed
Bob: Are you sure that you have the formula correct? It should perhaps be v(t) = (12t-3t) squared (i.e. to the power of 2).
Are you asking me or the OP satprof or the ? I can't even do alphapuzzle so can't solve this...but it just dosnt sound right to me
did you manage to check the wording or work this one out or work out how to post replys?
Satprof I think its more likeley to of been v =12t−3t². I also think the word "coordinates" is a typo or misundastanding as it don't make sense to me.... should just say velocity???

Basic 1979 secondary school mathamatics I can still see that its at rest when v =0, that is when t= 4.

Cant be that simple tho can it... compare to muffarids other questions which seem alot higher level to me
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