In English premier league football match between arsenal and Manchester city club in the 2015/2016 season at the emirate stadium,sagna throws a ball going right at 15m/s towards Yaya toure and hits his chest.if Yaya toure's body exerted a force of 30N to the left for 0.25s on the ball,how fast does the ball bounces off Yaya toure's chest?take the mass of the ball as 0.54kgq
M*a = -30. a = -30/M = -30/0.54 =
-55.6 M/S^2.
V = Vo + a*t = 15 - 55.6*0.25 = 1.11 m/s.