No, unless either of your hands touch the ground, or your head/helmet.
You are most likely to hit your patella, or kneecap, when you bang your knee against a hard surface. The patella acts as a protective bony shield for the front of the knee joint.
No!
there will only b a penalty run for the batsman . so he gets 2 runs
Once you have taken the penalty and hit the new ball, you may not hit the old ball again. Play on with the penalty and the new ball.
In American Football, hitting another player with the top of your helmet used to be called spearing but is now called "targeting with the crown of your helmet". It is a 15 yard penalty if committed by an offensive player and a 15 yards / automatic 1st down if called against a defensive player. The yards are added to the end of the play if called against a defensive player.
hammer knee
2 shot penalty
If you hit your head on something, the helmet will spread and soak up some of the energy of the hit, reducing your risk of head injury. If you don't hit your head, the helmet won't do anything. In extremely rare cases, the helmet will snag on something and yank on your head/neck.
The school girl had short red hair and freckles.When I was a school girl, our uniforms had to hit just below the knee.
your knee cap
A helmet lead hit to the side of an opponents helmet (their earhole).