To solve this problem we need the concepts related to Energy in terms of momentum and the average force of a body given by Newton's second law.
Energy in terms of momentum is given by the equation
[tex]J =mv[/tex]
Where,
m=mass
v=velocity
Part A) For the first part we understand that the impulse would be,[tex]J = (0.145)(32)\\J = 4.64 kg*m/s[/tex]
Part B) For part B the average force is given by,
[tex]F= ma[/tex]
Where,
m = mass
a = acceleration, which is also given by [tex]a=\frac{v}{t}[/tex]
Then,
[tex]F=m\frac{v}{t}[/tex]
[tex]F= 0.145*\frac{32}{20}[/tex]
[tex]F= 0.232N[/tex]