Question

Alex collides with a desk as he runs through his office. If the combined

momentum of Alex and the desk was 400 kg•m/s to the north before the
collision, what is their combined momentum after the collision?

Answer 1

400 kg.m/s

Step-by-step explanation:

In a closed system, the principle of conservation of momentum applies. It means. the total momentum before collision equals to the total momentum after collision hence since the initial momentum is given as 400 kg.m/s, the final sum will be the same.