Calculating Velocity
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Re: Calculating Velocity
Make sure you know the Difference!!!
p=mv is for the velocity of a photon, he will usually give you the momentum.
Ke is for Electrons!
p=mv is for the velocity of a photon, he will usually give you the momentum.
Ke is for Electrons!
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Re: Calculating Velocity
If the mass is in kilograms and the velocity is in meters per second then the momentum is in kilogram meters per second (kg⋅m/s)Lynsea_Southwick_3F wrote:What is the units for momentum, p?
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Re: Calculating Velocity
It depends on different condition, like if you need to calculate the velocity, and you have time and distance, you can use the most common equation:v=s/t, and if you have the momentum and mass of a subject, and you need to calculate the velocity, you can use the equation you have mentioned.
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Re: Calculating Velocity
Depends on the know information you have. If you know the kinetic energy of an electron then you could use 1/2mv^2 or if you know the momentum of the electron then you could use p=mv. Also the units for momentum would be kg.m.s^-1.
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