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8A paraglides jumps from an aeroplane. He falls down witha Velody of 78 m/s. He opens his parachote in air and hisVelocity of falling decreased to 50 m/s, within 12 s. Find theForce of air experienced on the paraglider if he weighs 50 kg. |
Answer» Answer
ExplanationGiven
To Find
Solution [So here we may FIRST find the acceleration of the body using the first Equation of motion, and then using the Newton's SECOND law will give us our final answer] ✭ Acceleration of the Paraglider ➝ v = u+at ➝ 50 = 78 + a×12 ➝ 50-78 = 12a ➝ -28 = 12a ➝ -28/12 = a ➝ Acceleration = -2.3 m/s² ✭ Force Experienced ➝ F = ma ➝ F = 50 × 2.3 ➝ F = 46 N |
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