An object moving with a speed of 6.25 m/s

• Kinematics

An object moving with a speed of 6.25 m/s, is decelerated at a rate given by dν/dt = 2.5√ν, where ν is the instantaneous speed. The time taken by the object, to come to rest, would be

1. 8 s
2. 4 s
3. 2 s
4. 1 s

Answer

The correct option is C.