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### calculating kinetic energy

Posted: **Mon Oct 08, 2018 1:19 pm**

by **Vikramjeet Gill 1C**

For the equation Ek=1/2(M)(V^2)

M stands for the mass of the electron, is the unit for that mass suppose to be in grams or kilograms for this equation?

### Re: calculating kinetic energy

Posted: **Mon Oct 08, 2018 2:12 pm**

by **marisaimbroane1J**

The standard units are kg, so I think your mass should be in kg. The mass of an electron is 9.11x10^-31 kg; so I think that is the number that should be used in the equation.

### Re: calculating kinetic energy

Posted: **Mon Oct 08, 2018 3:09 pm**

by **ariellasarkissian_3H**

Mass will be in kg, because that is the standard SI unit!

### Re: calculating kinetic energy

Posted: **Fri Oct 12, 2018 10:28 am**

by **michelle**

That should be kg. We use SI units in all equations.

### Re: calculating kinetic energy

Posted: **Fri Oct 12, 2018 10:53 am**

by **Vy Lu 2B**

The unit is supposed to be in kg, as that is the standard SI unit.

### Re: calculating kinetic energy

Posted: **Sat Oct 13, 2018 1:58 pm**

by **Harshita Talkad 4L**

We would use kg in the equation because it is the standard SI unit. Most equations will use base SI units.