The red and yellow car get into a collision. Before the collision, each car had a momentum of 5 kg. m/s. After the collision, the yellow car now has a momentum of 0. What is the momentum of the red car after the collision?

10 kg-m/s

Explanation:

It is given that,

Before the collision, each car (red+yellow) had a momentum of 5 kg.m/s.

After the collision, the yellow car now has a momentum of 0.

We need to find the momentum of the red car after the collision. The conservation of momentum will be applied in this problem. A/c to this law,

Momentum before collision = Momentum after collision

Hence, the momentum of the red car after the collision is 10 kg-m/s.