Answer:
The mass of the bullet is 15 g.
(b) is correct option.
Step-by-step explanation:
Given that,
Momentum = 2.8 kg m/s
Speed = 187 m/s
We need to calculate the mass of the bullet
Using formula of momentum


Where, P = momentum
v = speed
Put the value into the formula



Hence, The mass of the bullet is 15 g.