A particle travels horizontally with a retardation of v^2/250 m/s^2 when its speed is v m/s. find the interval of time over which its speed drops from 1000 to 500 m/s.

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- Jul 29th 2010, 11:23 AMdelicate_tearsFinding time given accelration & velocity
A particle travels horizontally with a retardation of v^2/250 m/s^2 when its speed is v m/s. find the interval of time over which its speed drops from 1000 to 500 m/s.

- Jul 29th 2010, 12:17 PMskeeter