Answer: P =40 kg*m/s
Explanation: If we ignore the effects of gravity and air resistance, we can think that the ball is moving at 20m/s constantly.
We know that the moment of some object can be calculated as:
P = m*v
where P is the moment, m is mass and v is the velocity of the object.
Then, in this case, we have:
P = 2kg*20m/s = 40 kg*m/s
This is the momentum of the ball.
