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. 10.5 m/s Take- off line 12.5 m/s 50°

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”