Physics Problem: Work-Energy and the Blob Jump

Oh, maybe you've never seen a blob jump. Here's an example.
• Highest Human Blob Lau...
But there are TONS of great blob jump videos you should watch.
In this problem, let's assume that three humans (80 kg each) jump from a height of 4 meters onto a blob with a 50 kg person. How high will the person travel?
I'm working through chapter summaries for introductory physics (algebra-based). I'm using the Openstax online (free) textbook College Physics. You can access this book here openstax.org/details/books/co...
Here is the playlist with all the videos and problems for this course.
• Online Physics 1 2024

[@fizixx]

You should do the one with 2 balls, one top of another and they're dropped and the top ball is cast high into the air.

[@fizixx]

That leftover 'r' was gonna be trouble!