The mass of a particular skateboard plus its rider is ms = 66.1 kg, and the skateboarder is holding abook with mass m, = 2.07 kg. Initially at rest, the skateboarder tosses the textbook with a velocity of06 = 4.94 m/s at an angle 0 = 28.8\deg above the horizontal, and the book is caught by a friend.a) Write an expression for the magnitude of the velocity of the student, Us, after throwing the book.b) Calculate the magnitude, in meters per second, of the velocity of the student.c) What is the magnitude, in newton seconds, of the momentum, Pe, which was transferred to the Earth during the time the book was being thrown?