Almost all of your joints are used in tennis, but the main ones in a tennis serve are the knee joints, and elbow joints.
Not that I know of If it is then I have bone cancer My joints pop all the time because I used to play sports
it is used in crushers.... it is used in sucker rod pump....
There are knees and elbows, they are the major joints.
Mobile Joints are joints that allow movement
Fussed joints (Stiff joints) they dont move at all
You can hit an underhand serve in tennis; however, the overhand serve is more effective because it is more powerful. That is why you don't see the underhand serve used much.
All of them. Pretty much any sport out side of chess uses your whole body
a serve
Badly.
A tennis ball!
It depends on how hard you want to hit the ball
a tennis ball
Let
Yes
A tennis ball.
a fault
Fault