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Ab object covers (16.0 pm 0.4) m distanc...

Ab object covers `(16.0 pm 0.4)` m distance in `(4.0 pm 0.2)` s. Find out the speed.

Text Solution

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The correct Answer is:
`(4.0 pm 0.3) m//s`
`V = (16.0)/(4.0) = 4.0 m//s`
`because (Delta V)/(V) = (Delta s)/(s) + (Delta t)/(t)`
`because Delta V = (4.0)[(4.0)/(16.0) + (0.2)/(4.0)] = 4.0 [ 0.2 + 0.5]`
`=0.28` after( rounding off) 0.3`
`rArr ` Speed `(4.0 pm 0.3) m//s`
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