The impact of artificial turf and natural turf on balls

1. Vertical bounce height: The value of natural grass is between 25% -45%; The value of artificial turf ranges from 30% to 42%.
2. The rolling speed of the ball: the value of natural turf is 4-10 meters; The value of artificial turf is 4-10 meters.
3. The bouncing situation of balls at different angles: landing at a 25 degree angle, bouncing at a speed of 50 kilometers per hour, with an altitude of 60% to 80%.