In rhythmic gymnastics athlete rolls the ball at a speed of 4 m / second athlete, who is from the first at a distance of 7 m. The second athlete must perform a somersault during the movement to the ball and move it with the 1 m toward the ball. Calculate the time after which the second athlete catches the ball, and the required frequency for the flip-flop.

Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.
If you have any questions to address, please. I'll try to help.