Question

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?

Answer 1

10 kg-m/s

Step-by-step 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

`p_r+p_y=p'_r+p'_y`

`5+5=0+p'_r\\\\p'_r=10\ kg-m/s`

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