Final answer:
The momentum of the bullet is 0.96 kg(m)/(s).
Step-by-step explanation:
In order to calculate the momentum of a bullet, we need to use the formula:
Momentum = mass *velocity
Given that the mass of the bullet is 1.2g and the velocity is 800(m)/(s), we need to convert the mass to kilograms by dividing it by 1000:
1.2g = 1.2/1000 kg = 0.0012 kg
Plugging the values into the formula:
Momentum = 0.0012 kg *800(m)/(s) = 0.96 kg(m)/(s)
Therefore, the momentum of the bullet is 0.96 kg(m)/(s).