Problem if an electron travels 0150 m from an electron gun, Ask an Expert

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Problem: If an electron travels 0.150 m from an electron gun to a TV screen in 9.0 ns,

Part A: What voltage was used to accelerate it? (Note that the voltage you obtain here is lower than actually used in TVs to avoid the necessity of relativistic corrections.)

I don't know how to get that solution. Please help.

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