Question

hhen an object moves at the speed of light then whay its mass increasr exponentially???

Answer 1

According to the theory of relativity, gravitational mass is always the same as inertial mass. ... As an object increases in speed, so does the amount of energy that it has, this energy is what we refer to as 'the increase in mass' (just remember, this is inertial mass).

In fact, no object with any finite restmass can move at the speed of light. ... As a particle with mass approaches thespeed of light, its energy increases and becomes infinite at the speed of light, which is the reason why it can never be accelerated to reach that speed.

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