Answer:
Ribosomes
Explanation:
Rough endoplasmic reticulum, choloroplast and nucleus all are important organelles and are membrane bound except for ribosome
A eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes. However, unlike prokaryotic cells, eukaryotic cells have: a membrane-bound nucleus. numerous membrane-bound organelles (including the endoplasmic reticulum, Golgi apparatus, chloroplasts, and mitochondria)
The ball will hit with a force of 56 newtons per second