In a relativistic heavy-ion collider, a gold nucleus is accelerated until its kinetic energy is exactly 4.00 times its rest energy.
Calculate the speed of the gold nucleus.
(Speed of light in a vacuum, c=3.00×108 m s−1c = 3.00 \times 10^8 \text{ m s}^{-1}c=3.00×108 m s−1)
