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A charge q of mass m is released a distance d from a semi-infinite grounded conductor. How long will it take the charge to reach the conductor?

So I tried this using the method of images, and I can easily find the force on the charge a distance d away:

F = -q^2 zhat / (4 pi epsilon0 (2d)^2)

But I'm not sure where to go from here.

Any help would be fantastic

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# Homework Help: Charge released from rest near a grounded conductor

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