**Answer:**

Kinetic energy of the electron

**Explanation:**

It is given that,

Initial speed of an electron, u = 660000 m/s

Final speed of the electron, v = 0 (at rest)

**The kinetic energy of an electron is possessed due to the motion of an electron. The mathematical formula for the kinetic energy is given by :**

m is the mass of electron

Since,

**So, the initial kinetic energy of the electron is 1.23 eV. Hence, this is the required solution.**

The object will stays the same.

80 because if you add 50 +30 =80 so yea that why I pick 80

Your answer is A

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