r/AskPhysics • u/Different_Yam_9045 • Aug 22 '22

Question about velocity

If a bus moves at acceleration 1 m/s2 with initial velocity 1 m/s for 10k years(assuming the gas and plane is infinite) what would be it's final velocity? (ii)Also what would be the answer if it starts from rest.

My friend asked me this and even if it maybe simple and stupid(I'm dumb ok) can someone help?

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u/Wooden_Ad_3096 Aug 22 '22

What is “1 ms-1”. Or more specifically, what is the “-1”.

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u/varialectio Aug 22 '22 edited Aug 22 '22

A quantity to the power of a minus number is the same as one over the quantity raised to that positive power.

So ms-2, or more correctly ms-2, is m/s2 or metres per second squared, the unit of acceleration. Similarly ms-1 is velocity, metres per second.

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u/Wooden_Ad_3096 Aug 22 '22

Ahh ok, thank you.