4. In the high jump, the kinetic energy of an athlete is transformed into gravitational potential energy without the aid of a pole. With what minimum speed must the athlete leave the ground in order to lift his center of mass 2.10 m and cross the bar with a speed of 0.50 m/s? Draw a diagram each choose origin and axes

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4. In the high jump, the kinetic energy of an athlete is transformed into gravitational potential
energy without the aid of a pole. With what minimum speed must the athlete leave the
ground in order to lift his center of mass 2.10 m and cross the bar with a speed of 0.50 m/s?
Draw a diagram each choose origin and axes
Apply conservation of energy
Result in symbols only
Final result
5. A ball of mass m makes a head-on elastic collision with a second ball (at rest) and rebounds
with a speed equal to 0.450 its original speed. What is the mass of the second ball?
Draw diagrams of the initial and final situations and choose a coordinate system.
Apply conservation of momentum
Result in symbols only
Final result
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Transcribed Image Text:4. In the high jump, the kinetic energy of an athlete is transformed into gravitational potential energy without the aid of a pole. With what minimum speed must the athlete leave the ground in order to lift his center of mass 2.10 m and cross the bar with a speed of 0.50 m/s? Draw a diagram each choose origin and axes Apply conservation of energy Result in symbols only Final result 5. A ball of mass m makes a head-on elastic collision with a second ball (at rest) and rebounds with a speed equal to 0.450 its original speed. What is the mass of the second ball? Draw diagrams of the initial and final situations and choose a coordinate system. Apply conservation of momentum Result in symbols only Final result ure.com/courses/66313/files/6485856?module_item_id=2202300 く * %23 $ & 4 5 6 7 8
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