Question

Why it is degurous to jump on a concert floor

Answer 1

Because when u jump on a concrete floor the momentum of your jump is quickly converted into stopping motion which in result can even break your bones but it can be avoided by following a roll after the jump to minimize the momentum

Answer 2

Here your answer
The concert particles are held together strong and break then into small particles very great force, so that it is dangerous to jump on a concert floor.
Hope this helps you friend
Thanks