A let is a serve that hits the net but falls into the opponent's correct service court. The server is allowed to serve again and no penalty is given.
No it is not a hindrance. The person can keep playing the point if they can get up and get to the ball.
Whoever would normally have won the point still wins the point. There is no pity point if someone falls on the court.... it's just part of the game.
No, not as long as the ball goes over the net and falls in the correct part of the court. You can have as many lets (essentially uncounted serves) as you want, although it is extremely rare to have more than one per service.
Tennis ball, its heavier.
A tennis ball is fuzzy, has more drag, and falls slower. A soccer ball is smooth, has less drag, and falls faster.
Wet, because in has more weight on it. If a tennis ball is wet it can't bounce it just falls and stays on the ground.
golf is faster than both but tennis is faster than baseball
They reach the ground at the same time.
Niagara Falls is the correct spelling. (Notice the use of capital letters.)
"Dust falls into your eye."
It served as the start of the Women's Suffrage Movement.