As I recall, earlier versions of the 737 cruised at a relatively slow .74M (485mph), while later versions have increased to around .78M (510mph). Maximum speed is ,82M, or 51 â¦ 1 mph.     If you have flight simulator 2004 or Flight Sim X the top speed is 340 kph.s I recall, earlier versions of the 737 cruised at a relatively slow .74M (485mph), while later versions have increased to around .78M (510mph). Maximum speed is ,82M, or 51 â¦ 1 mph.     If you have flight simulator 2004 or Flight Sim X the top speed is 340 kph.
Some of the major muscles of the calf include: 1  Gastrocnemius (calf muscle): One of the large muscles of the leg, it connects to the heel. It flexes and extends the foot, ankle, and knee.  Soleus: This muscle extends from the back of the knee to the heel.
Hamstrings. Three muscles called the semitendinosus, semimembranosus and biceps femoris make up your hamstrings. These muscles run along the back of your thighs and are easily injured or strained. They run from your pelvis to the back of your knees and together work to stabilize the hip joint. The hamstrings are the primary muscles that perform hip extension during normal walking. In addition to hip extension, the hamstrings also bend your knees. These muscles propel your body forward and increase your walking speed.