Dragon Ball Kai Episode 49 English Dubbed Episode Title:Avenge the Fallen, Goku! Countdown to the Planet's Destruction!.Episode Description:Frieza's attack on Namek detonates the planet's core, and he says that Namek will explode in five minutes. Super Saiyan Goku is confident that he can defeat Frieza within that time; however, Frieza then decides to power up to 100% of his full power. As their fight continues, Goku yells at Frieza to stop stalling while beating him, and Frieza begins powering up, first to 60% and then 70% of his maximum power. At 70% power, Frieza manages to blast Goku deep into the planet's surface, giving him pause. When Frieza finally begins powering up to 100%, King Kai urges Goku to strike at Frieza and take him down before he can reach full power, which Goku refuses to do. Much to King Kai's amazement, Goku allows Frieza to reach his full power rather than attacking while Frieza powers up, wishing to defeat the tyrant at his best and also avenge his friend Krillin.