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Jackson is a 61.36 kg pole-vaulter. He falls from a peak height of 5.79 m after...

Jackson is a 61.36 kg pole-vaulter. He falls from a peak height of 5.79 m after pole-vaulting over a crossbar set at that height. He lands on a thick mat. When Jackson first contacts the mat, his center of gravity is only 0.99 m high. During Jackson’s impact with the mat, the mat compresses. At the point of maximum compression, Jackson’s vertical velocity reaches zero, and his center of gravity is only 0.47 m high. What average force did the mat exert on Jackson during this impact?

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