Question

A bomb at rest explodes into a large number of tiny fragments. The total momentum of all the fragments


A : Is zero


B : Depends on the total mass of all the fragments


C : Depends on the speeds on various fragments


D : Is infinity

Answer 1

oh sorry

the answer is a

In an explosion, an internal impulse acts in order to propel the parts of a system (often a single object) into a variety of directions. After the explosion, the individual parts of the system (that is often a collection of fragments from the original object) have momentum. If the vector sum of all individual parts of the system could be added together to determine the total momentum after the explosion, then it should be the same as the total momentum before the explosion. Just like in collisions, total system momentum is conserved.

Answer 2

A) is zero because total system momentum is conserved...

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