The volleyball is played with a ball of about 270 g and 21 cm in diameter.
In one game, the ball ended up in a pool with so much strength that it almost reached the bottom of it and then went up to the surface.
a) The force exerted by the pool water on the ball.
b) The acceleration with which the ball rose to the surface.
c) Assuming that the density of the balloon was uniform, what part of it stood out from the water?