Recent content by cata

I want to know some exercises for the spinal muscles with these different muscle contractions. Any reference would help a lot. Thanks. I'm not looking to lose weight or do these exercises myself, I need examples for a project I'm doing.

From the ground two objects are thrown vertically up with the same initial speed. The second object is thrown when the first one touches his maximum height H=16m .At what height do the objects meet ?

am installing android and I need a zephyr2.bin file in my idroid folder but I can't seem to download it. How do I get this file?