one of them are blue
Yellow
Yellow
The colour is yellow.
They theoretically could be any colour - but they're usually black.
Squash
Pickle ball Squash
Wilson.
The sport is probably squash, although the ball doesn't have to be black.
The diameter of a tennis ball is 2.63 inches, or 6.7 centimers. A squash ball's diameter is between 39.5 and 40.5 millimeters.
Yes squash ball is between 23 to 25 grams, and golf balls can get up to 46 grams
Yes, a squash ball will bounce on concrete, but the bounce will be much lower compared to bouncing on a squash court surface. The hard surface of concrete absorbs more energy from the ball, resulting in a shorter bounce.