You kick a soccer ball 15 meters without hurting your foot much. You then pump the ball up until it…

You kick a soccer ball 15 meters without hurting your foot much. You then pump the ball up until it is really hard ( the extra air does not significantly change the ball’s mass) and again kick it 15 meters. This time it hurts a lot. Using the concept of impulse, explain why it hurts more in the second case