B) law of conservation of momentum
It states that the total momentum of a system before impact is the same as the total momentum of the system after impact.
In this case total momentum before impact:
10kg*5m/s + 5kg * 0m/s = 50 kg m/s
After Impact:
10kg*0m/s + 5kg*10m/s = 50 kg m/s
You can see the momentum before and after impact is same as 50 kg m/s
Of course we assumed that the first cart stopped after the impact, and there are no energy losses.
Answer:
You can see the moon when it is in the perfect spot and it's reflecting the right amount of light. :)
Hope this helps! If you don't mind, please mark as brainliest! Thx!
smaller, because the part of the velocities cancel each other out