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A swimmer bounces straight up from a diving board and falls feet first into a pool. She starts with a velocity of 4.00 m/s, and her takeoff point is 1.80 m above the pool. (a) How long are her feet in the air? (b) What is her highest point above the board? (c) What is her velocity when her feet hit the water?
A swimmer bounces straight up from a diving board and falls feet first into a pool. She starts with a velocity of 4.00 m/s, and her takeoff point is 1.80 m above the pool. (a) How long are her feet in the air? (b) What is her highest point above the board? (c) What is her velocity when her feet hit the water?
Answer:a) Her feet are in the air for 0.73+0.41 = 1.14 secondsb) Her highest height above the board is 0.82 mc) Her velocity when her feet hit the water is 7.16 m/sExplanation:t = Time takenu = Initial velocity = 4 m/sv = Final velocitys = Displacementa = Acceleration due to gravity = 9.81 m/s²b) Her highest height above the board is 0.82 mTotal height she would fall is 0.82+1.8 = 2.62 ma) Her feet are in the air for 0.73+0.41 = 1.14 secondsc) Her velocity when her feet hit the water is 7.16 m/s...
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