A hollow ball, made of a thin plastic shell, rolls down a rough
hill (no slipping) of height h? from rest and across a level
ground. It then approaches another hill, but this one is smooth and
frictionless.
a) Draw a diagram of this situation. (4 points)
b) Write down the energy equation which represents the first
half of the journey and simplify it to find an expression for the
maximum linear velocity of the ball. (4 points)
c) Write...