When two billiard balls collide the collision is nearly elastic. An elastic collision is one in which the kinetic energy of the system is conserved before and after impact. For collisions between balls, momentum is always conserved (just like in any other collision).

The initial velocity of the ball was +4.90 m/s (up).

The ball’s speed just before impact is 6.5 m/s, and just after is 3.5 m/s.

Measure the distance the object will fall in feet with a ruler or measuring tape. Divide the falling distance by 16. For example, if the object will fall 128 feet, divide 128 by 16 to get 8. Calculate the square root of the Step 2 result to find the time it takes the object to fall in seconds.

1 Expert Answer s(t) = 32 + 56t – 16t2 is the equation of motion where the negative term is due to gravity; s(t) is the height after t seconds.

A scoop or a hit that does not follow a perfectly linear path or straight line, still seems like it would be defined as “one-motion.” i.e., A pickleball serve is rarely ever in a perfect linear/straight motion. It usually follows some kind of scoop or underhanded arc motion.

If you want to try to put more topspin on your serves, it will make your opponent’s return serve much more difficult, and you can get a few aces in there if you hit the centerline. Another way to enhance the spin on your serves, whether or not it’s top or side spin, is to use a paddle with a fiberglass face.

There are three types of serves in pickleball:

• High Soft Serve.
• Power Serve.
• Soft Angle Serve.

The server, or referee if the match is officiated, will then re-call the score, and the server will have a fresh 10 seconds to serve the pickleball.

Two per game? No! There is no restriction on let serves during a game. You can keep going until you get a quality serve or a fault.

Double/Carry Hits : A ball hit during one continuous single direction stroke is legal, even though the ball may be unintentionally hit twice or “carried”.

The Top 10 Rules Of Pickleball

• Court Rules and Dimensions.
• Serving Sequence Rules.
• Serving Rules.
• Double Bounce Rule.
• No-volley Rule.
• Second Bounce Rule.
• Out of Bounds Rule.
• Net Rules.

However, this rule has been changed to remove service lets in an effort to (1) preserve the integrity of the sport and prevent receiving teams from calling “phantom lets” on “ace serves”; (2) reduce conflicts between players or between referees and players over a let call; and (3) stop referees from performing a …