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A trolley, while going down an inclined ...

A trolley, while going down an inclined plane has an acceleration of` 2cm s^(-2)` What will be its velocity 3 s after the start?

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`u=0`
`a=2" cm/s"^(-2)`
`t=3s`
By first equation of motion,
`v=u+at`
`rArr v=0+2xx3`
`rArr v=6" cm/s"`
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