# Please tell the solution of this question with the change of the sign in this question

**Solution : **

Mass of body A, m_{a} = 150 g = 0.15 kg

Mass of body B, m_{b} = 250 g = 0.25 kg

Both the bodies are moving towards each other. Let the direction of B be taken as positive. Then the direction of A will be considered negative.

Velocity of A, v_{a} = - 3 m/s

Velocity of B, v_{b} = 3 m/s

Now, total momentum of the system,

P = m_{a}v_{a} + m_{b}v_{b}

=> P = (0.15)(-3) + (0.25)(3)

=> P = -.45 + .75

=> P = 0.30 Ns

**
**