A high jumper of mass 55kg wishes to jump over a bar 1.8
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A high jumper of mass 55kg wishes to jump over a bar 1.8m above the ground. Her center of mass is located at 1.om above
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A high jumper of mass 55kg wishes to jump over a bar 1.8m above the ground. Her center of mass is located at 1.om above the ground. (We can imagine that all of her mass is located at this point for calculation purposes. (a) If she wishes to clear the bar while traveling at speed of 0.4m/s, how fast must she be traveling the instant her feet leave the ground? (b) She lands on her back on a foam pad that is 40cm thick. At what speed will she be traveling when she first makes contact with the pad? (c) Shortly after she lands she will be at rest. What has happened to the mechanical energy she had moments earlier?
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