Qualification > Math

HELLP ME ON THIS QUESTION OF MATHS PLSSSSS

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DEGO:
A PARTICLE MOVES ALONG A LINE
for> the distance of particle from O at time T is X meters   WHERE
x=20/t

find an expression for the acceleration of the particle
 i cant understand how its answered in MS

astarmathsandphysics:
Write it as and diffentiatte

DEGO:
how did the 20 change to  - 20  XD (some times i get mind block)

holtadit:
Dude this isnt IGCSE man !!

This is like A-Level

DEGO:
i got it THX  (the first hard question i meat in edexel maths)

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