If a ball has the same speed just before being caught and just after being thrown, in which case does the ball undergo the greatest change in momentum: (1) When it is caught, (2) when it is thrown, or (3) when it is caught and then thrown back

(3) when it is caught and then thrown back

Explanation:

Since it is known that the ball has the same speed just before being caught and just after being thrown, therefore, the change in momentum is same for the case (1) when it is caught and case (2) when it is thrown.

But the change in momentum is greatest in case (3) because it is stopped and then being returned back hence twice the change in momentum as compared to case (1) and case (2).

Therefore, the greatest change in momentum is when the ball is stopped and then thrown back.

saving account is right

not  

cuba  

russia  

iraq  

el salvador  

explanation:

known as the land of volcanoes, el salvador has visit seismic tremors and volcanic movement. it is the main nation in central america that does not have a coastline on the caribbean sea. about portion of all salvadorans live in the wide open. they are poor and don't have power or running water in their homes. in 1525, pedro de alvarado, a lieutenant of cortés's, vanquished el salvador. el salvador, with alternate nations of central america, pronounced its freedom from spain on sept. 15, 1821, and was a piece of a league of central american states until the point when that association broke up in 1838.