Calculating Relativistic Momentum for Physics Students

[Cell_52797]

Homework Statement

If a mass of 1 kg has a velocity of 0.7c, what is the relativistic momentum?

Homework Equations

I don't know what equation to use...Please help..

 

[Bandersnatch]

Start by writing down the equation for the regular, non-relativistic momentum.

Do you know any relativistic equations for any of the values making up the momentum equation?

 

[theodoros.mihos]

Relativistic momentum on 4D Minkowski space have 4 coordinates.
$$p_i=mv_i,\,p_{ct} = mc$$
Consevation for this momentoum:
$$ \Delta{x}^2+\Delta{y}^2+\Delta{z}^2-c^2\Delta{t}^2=\text{const}$$
give:
$$m=\frac{m_0}{\sqrt{1-(v/c)^2}}$$
where m₀ is the mass for its own frame.

 

[Cell_52797]

Start by writing down the equation for the regular, non-relativistic momentum.

Do you know any relativistic equations for any of the values making up the momentum equation?

No, haha... I am terrible at physics...