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A car starting with velocity 10 "m.s"^(-...

A car starting with velocity 10 `"m.s"^(-1)` attains an acceleration 1 `"m.s"^(-2)`.
After what time interval will its velocity be 20 `"m.s"^(-1)` ?

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The correct Answer is:
10 s
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CHHAYA PUBLICATION-ONE - DIMENSIONAL MOTION -Hots Numerical Problems (Based on Rectilinear Motion)
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