A .4kg soccer ball approaches a player horozontally with a velocity of 18 m/s to the north. The player strikes the ball and causes it to move in the opposite direction with a velocity of 22 m/s. What impulse was delivered to the ball by the player?

160Ns

Explanation:

Mass(m)=4kg

Initial velocity(u)=18m/s

Final velocity(v)=22m/s

impulse=change in momentum

Impulse=m(v-u)

Since it's moving in opposite direction impulse=m(v-(-u))

Impulse=4(22-(-18))

Impulse=4(22+18)

Impulse=4x40

Impulse=160Ns

the correct choice is a .

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