Question 578359
Albert Einstein also showed that the weight (mass) of an object increases when travelling near the speed of light.
Actually, he showed that mass increases with speed.
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If a persons weight on earth is Wo, then the same persons weight W in a spaceship travelling at velocity V is

W(V) = Wo divided by the square root of 1-(v/c)squared 

A) evaluate W when v=0.6c and Wo= 220
{{{W = Wo/sqrt(1-(v/c)^2)}}}
{{{W = 220/sqrt(1 - (0.6)^2)}}}
W = 220/sqrt(0.64) = 220/0.8
W = 275
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B) interpret your result
The faster you go, the more your mass.