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A BALL OF MASS 100g IS THROWN FROM THE GROUND WITH SPEED 20 m/s COMES BACK TO THE GROUND WITH SPEED 10 m/s . FIND THE WORK DONE BY THE AIR RESISTANCE.

RAGINI SEIWAL , 6 Years ago
Grade 12
anser 1 Answers
Eshan

Last Activity: 6 Years ago

Dear student,

Form law of conservation of energy, the work done by air resistance= loss in kinetic energy of the ball.

=\dfrac{1}{2}m(v_1^2-v_2^2)=\dfrac{1}{2}(0.1)(20^2-10^2)J=15J

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