Question: How many seconds do you have to throw a grenade?
Disambiguated questions and answers: question: How many seconds did you have to throw the first World War I fragmentation grenades?
How many seconds did you have to throw the updated World War I fragmentation grenades?
How many seconds did you have to throw a WWI stick grenade?
How many seconds do you have to throw a US ET-MP grenade?
answer: seven
four
five
user-settable timed electronic fuze
question: How many seconds was the delay of the Mills bomb grenade before explosion prior to 1940?
How many seconds was the delay of the Mills bomb grenade before explosion after 1940?
How seconds was the delay of WWII era thermite?
answer: 7
4
2
Natural Questions answer: 4 and 5 seconds (from the Wikipedia article "M67 grenade")