Please Help Me With This Physics Exercise

[mufarrid]

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=?

[JimF]

What does your school say about cheating?

[bobbinwales]

Is the q right? 12t -3t = 9t so have you missed something out is it t sqaured, and is it coordinates or velocity/speed

[bobbinwales]

https://www.assignmentexpert.com/homework-answers/physics/mechanics-relativity/question-282999
Is this you asking here. Question still looks wrong to me???

[satprof]

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).

[bobbinwales]

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

[bobbinwales]

did you manage to check the wording or work this one out or work out how to post replys?

[bobbinwales]

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