You're changing the value of count3, but you're not using it anywhere. You need to loop through the whole array, get the object for each index, and do a collision check with that object.
Code:
for (int i = 0; i< [objectsArray count]; i++){
UIView* currentBomb = (UIView*)[objectsArray objectAtIndex:i];
if(CGRectIntersectsRect(currentBomb.frame, wood.frame)){
NSLog(@"Collision ");
}
}