In 1908 There Was a Huge Explosion Referred to as the Tunguska

Multiple Choice

In 1908 there was a huge explosion referred to as the Tunguska event which occurred in Siberia.Apparently this was caused by a very large meteorite,a small asteroid,or a comet colliding with the Earth.If the energy released,estimated at 5 × 10¹⁶ J,were from the kinetic energy of the object,what would have been its approximate mass if its speed had been 10⁴ m/s?

A) 10⁶ kg
B) 10⁹ kg
C) 10¹² kg
D) 10¹⁴ kg