An athlete with a mass of 65.0 kg is running at a horizontal velocity of 10.5 m/s before jumping at the takeoff line. When he arrives at the takeoff line, he stays in contact with the ground for 0.185 seconds before taking off at a 50.0 degree angle with a velocity of 12.5 m/s. Determine the vertical component of the average impulsive force exerted on the athlete by the ground. 12.5 m/s 50