A stone weighing 0.5 kg is thrown vertically upward with an initial speed of 10 m / s. Indicate all correct statements

A stone weighing 0.5 kg is thrown vertically upward with an initial speed of 10 m / s. Indicate all correct statements: A. The momentum of the stone increases when it rises; B. The momentum of the stone at the moment of throwing is 5 kg * m / s; Q. When the stone moves upward, its momentum does not change.

m = 0.5 kg.
V = 10 m / s.
g = 9.8 m / s ^ 2.
R – ?
The momentum of a body is called a vector quantity p, which is equal to p = m * V.
p = 0.5 kg * 10 m / s = 5 kg * m / s.
Since the stone is moving upward, and the acceleration of free fall is directed downward, its speed will decrease when it rises, which means that the momentum will also decrease.
Answer: B. The momentum of the stone at the moment of throwing is 5 kg * m / s;