<span>Answer:The iliopsoas muscle
</span>The
iliacus and the psoas major muscles, together are known as the iliopsoas muscle. That's because they share a common insertion on the small trochanter of the femur. However, they have different origins, making them two different muscles. Together, they are strong flexors of the hip.
2,450 Joules, kinetic energy is 1/2 mass x velocity squared.