Question

Christine wants to "punt" a football (kicking a football). They toss the 0.41kg football and kick it so their foot does 83J of work on the football. Note that Christine times the kick such that the football is momentarily stationed when the football is precisely 1 meter off the ground (contact with the football is made right when the football is changing from moving away from the ground to moving towards the ground). At the top of the football's trajectory after the kick, the football has a speed of 5 m/s. Christine is skilled enough to kick the football without giving it any spin. You may ignore any interactions the football has with their air. What is the maximum height the football reaches?

Answer 1