Ask Me Help Desk - A body started rolling over a horizontal surface with an initial velocity of 0.5 m/s.

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A body started rolling over a horizontal surface with an initial velocity of 0.5 m/s.

A body started rolling over a horizontal surface with an initial velocity of 0.5 m/s.Due to friction,its velocity decreases at the rate of 0.05 m/s2. How much time it take for the body to stop?

Use the definition of acceleration:

$<br /> a = \frac {\Delta v}{\Delta t}<br />$

Here you have values for $a$ and $\Delta v$ . Do the math to find $\Delta t$

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