Upvote:4
The atomic bombings likely sped up the surrender of the Japanese forces, but it wasn't the only cause. It was a larger one, but not the only one. The Soviet invasion of Manchuria also helped speed up the surrender, as Japan was struggling. Without the bombings, America likely would've had to invade Japan, possibly with help from the Soviets. The question itself, is YES, in all caps, since it is pretty straight forward.
Upvote:16
It did and the Japanese emperor, in announcing the surrender of Japan to Allied forces specifically referred to atomic weapons in his speech which was broadcast to the entire country with these words:
... Moreover, the enemy has begun to employ a new and most cruel bomb, the power of which to do damage is, indeed, incalculable, taking the toll of many innocent lives. Should We continue to fight, not only would it result in an ultimate collapse and obliteration of the Japanese nation, but also it would lead to the total extinction of human civilization. ....
Imperial Rescript on the Termination of the War issued by the Chrysanthemum Throne on August 14, 1945.