Yes, it is quite possible. Similar to a war hammer, hammers are probably the third deadliest weapon in history, being one of the oldest military technologies.
Yes, it is possible for someone to die from a sledgehammer blow to the back with enough force. The impact could cause significant internal injuries, such as damage to vital organs or the spinal cord, leading to death.
Not likely, but it could. You could kill someone by throwing a rock at them. Worked for Goliath.
Sledgehammer? In no Pokemon game you can get a sledgehammer.
Hornets can kill someone if they are allergic to the venom. And if enough of them sting someone, they could go into shock and that could be a problem.
no
it could kill several people if close together..........................
Not likely, but you could kill someone with a bicycle. They were not designed to kill or injure.
To use excessive and/or unnecessary means to achieve a goal. E.g. Using a sledgehammer to kill an ant.
No.
It could if someone stabbed you in the heart with one...
It could kill someone.
I am quite adept with a sledgehammer. A sledgehammer weighs more than your average hammer. Would you please pass me that sledgehammer? I have a smashing idea! A sledgehammer is the best hand tool for making little rocks from big rocks.