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pkghuman
Jun 29, 2013, 08:30 AM
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?

ebaines
Jul 1, 2013, 05:57 AM
Use the definition of acceleration:


a = \frac {\Delta v}{\Delta t}


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