A $32\mathrm{????}\mathrm{????}$ gun is standing on a frictionless surface. The gun fires a $45\mathrm{.}3\mathrm{????}$ bullet with a muzzle velocity of $311\frac{\mathrm{????}}{\mathrm{????}}.$

The positive direction is that of the bullet. Calculate the momentum of the bullet immediately after the gun was fired.

Answer in units of $\mathrm{????}\mathrm{????}*\frac{\mathrm{????}}{\mathrm{????}}.$

part $2$ of $4$

Calculate the momentum of the gun immediately after the gun was fired.

Answer in units of $\mathrm{????}\mathrm{????}*\frac{\mathrm{????}}{\mathrm{????}}.$

part $3$ of $4$

Calculate the kinetic energy of the bullet immediately after the gun was fired.

Answer in units of $\mathrm{????}.$

part $4$ of $4$

Calculate the kinetic energy of the gun immediately after the gun was fired.

Answer in units of $\mathrm{????}.$