1) When you accelerate a particle in the laboratory near to the speed of light
you measure an increase in its mass. Does the particle measure an increase
in it's mass or an increase in your mass?
2) When you accelerate a particle in the laboratory are you accelerating the particle
or decelerating the particle and how do you know?
3) Is the inertial mass of an object of matter the same in deep space (far outside our solar system)
as the inertial mass of the same object of matter in our local neighborhood and how do you know?