Soccer balls can come in different weights as well. This is primarily because of the different types of inner linings that the ball has did wanted to see how that impacted the forces felt by the player so he said out to the seminal forces felt by the player upon impact with two different valves, use the table below to complete the calculations But line ball time equals 0.18 seconds mass equals 0.444 kg initial velocity equals 7M/S final velocity equals -5M/S calculate for felt by ball and force felt by player latex line balls time equals 0.18 seconds mass equals 0.385 kg initial velocity equals 7M/S final velocity equals -5M/S ululate forced by ball and forced by player