Energy at top = U = mgh = 40 * 9.8 * 12 = 4704 J
Energy at bottom = 1/2 mv² = 1/2 * 40 * 10² = 4000 / 2 = 2000 J
Energy Lost = Final - Initial = 4704 - 2000 = 2704 J
In short, Your Answer would be 2704 Joules
Hope this helps!
Every one has a reason in life. You may not know what it is just yet, but you do.
It would go slower there needs to be more gravity to go faster
Answer:
a
because the mechanical wave is when it goes over and over again
The density will always be the same.
