Answer:
Part a)

Part b)

Part c)

Step-by-step explanation:
Part a)
As we know that the velocity of the tip of the kicker's shoe is given as

also the length of the tip of the shoe from his hip joint is given as

now the angular speed is given as



Part b)
As we know that force on the ball is given as rate of change in momentum of the ball
so it is given as

so we have



Part c)
As we know that the formula of range is given as

now for maximum range we know



