11: Let's calculate the average useful power output for the following three situations: (a) A 75 kilogram sprinter accelerates from zero to 11 meters per second in a time of 3.0 seconds (b) A 75 kilogram person walks from ground level up stairs to a final height of 100 feet (then stops) in a time of 3 minutes (c) A shotputter takes 1.29 seconds to accelerate a 7.32 kilogram shot from rest to 12.0 meters/sec while also raising the shot a height of .70 meters during the throw. (Calculate just the power put into the shot, the shotputter moves a lot of body parts here too we won't include)