A bus in motion increases its speed from \[30\,\,km\,\,{{h}^{-1}}\] to \[60\,\,km\,\,{{h}^{-1}}\] in \[20\] seconds. Find its acceleration.

A bus in motion increases its speed from \[30\,\,km\,\,{{h}^{-1}}\] to

1.	A bus in motion increases its speed from \[30\,\,km\,\,{{h}^{-1}}\] to \[60\,\,km\,\,{{h}^{-1}}\] in \[20\] seconds. Find its acceleration.
A.	\[0.21\,\,m\,\,{{s}^{-2}}\]
B.	\[0.42\,\,m\,\,{{s}^{-2}}\]
C.	\[0.63\,\,m\,\,{{s}^{-2}}\]
D.	\[0.84\,\,m\,\,{{s}^{-2}}\]
Answer» C. \[0.63\,\,m\,\,{{s}^{-2}}\]

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A bus in motion increases its speed from \[30\,\,km\,\,{{h}^{-1}}\] to \[60\,\,km\,\,{{h}^{-1}}\] in \[20\] seconds. Find its acceleration.

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