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decceleration isn’t a real word! I promise you. Ben is right it is calculated with the suvat formulas which I assume you have in your physics books, but remember if it says decceleration (which as i said isn’t a real word)/retardation you do not put a - sign in front of the answer, if it says acceleration you put a - sign in front of the answer. I hope this helps… and tell your teacher that decceleration is just wrong! :)

as above, except it’s negative, because it is slowing down

Deceleration is a real word.
Its in all the physics books, on all revision websites and on the sheet I am working from.
It says that the object is travelling at a speed on 10 m/s to the power minus one, which is really confusing tbh - would this affect the answer?

no. because its to the power minus one it should say

ms^-1

(^-1 is meant to be a little, superscript minus one)

most of the time you se m/s, which is metres divided by seconds, because the minus one is there, it means metres multiplied by seconds, but (well if you’ve ever done powers in maths you should know -1 means 1 over the number you have) this means its just metres divided by seconds written differently. hope you understand this.

anonymous5678 wrote:
no. because its to the power minus one it should say

ms^-1

(^-1 is meant to be a little, superscript minus one)

most of the time you se m/s, which is metres divided by seconds, because the minus one is there, it means metres multiplied by seconds, but (well if you’ve ever done powers in maths you should know -1 means 1 over the number you have) this means its just metres divided by seconds written differently. hope you understand this.

Im sorry but I don’t understand :S
All this is fairly new to me; up until now Ive only learnt about velocity, time, speed and acceleration.

well, you know when you write something (lets call the number s) squared, and it looks like…

s² (that little dot is a two)

when the two is replaced by a minus number, lets call it -n, it means it can be written as

n
-
s

so because normally you write m/s, that is basically saying

m
-
s

when you have ms^-1, the power is only for the s. so the m isnt affected. meaning ms^-1 means…

m
-
s

which is m/s

let me know if this helps

(confusing i know)

Anonymous wrote:
Deceleration is a real word.
Its in all the physics books, on all revision websites and on the sheet I am working from.
It says that the object is travelling at a speed on 10 m/s to the power minus one, which is really confusing tbh - would this affect the answer?

Oh I know it’s in all the Physics books, it’s just not a proper term the one that should be used but isn’t widely used because of people’s ignornance and how they would snigger is retardation. I kid you not.

To reiterate the point to redundency…As several people have said. Deceleration is acceleration in the other direction. oh and breaking the word down.

Ac = ad = toward
De = from

celer = course

so the word is fine. It gives the direction of the course which is away from where you are pointed which is the same as negative acceleration.

Ive done the question now :)
Ill see if its right when I hand my work in tomorrow.
Thank you all for your help :)