Answer: The momentum of the combined system will be equals to P = [tex](69 + 1.725) \times V[/tex] i.e [tex]70.725 \times V[/tex] Kg m/s
Explanation:
Mathematically momentum of a body is defined as mass times the velocity of that body.
It is a vector quantity, have magnitude as well direction and it is denoted by the notation "p"
The S.I. unit of momentum is Kg m/s.
[tex]Momentum (p) = Mass (m) \times Velocity (v)[/tex]
Momentum of hero ([tex]p_{1}[/tex]) = [tex]m_{1}\times v_{1}[/tex] = [tex]69 \times v_{1}[/tex]
Momentum of book ([tex]p_{2} = m_{2} \times v_{2}[/tex] = [tex]1.725 \times v_{2}[/tex]
If we consider both the hero and book as system that is moving with a common velocity i.e. V m/s then the momentum of the combined system will be equals to
P = [tex](m_{1} + m_{2}) \times V[/tex]
P = [tex](69 + 1.725) \times V[/tex]
P = [tex]70.725 \times V[/tex] Kg m/s
