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What is the average horizontal force acting on a ball when it elestically bounces off a wall, assuming the collision times is 0.1 s and the momentum of the ball before the the bounce was 2kg. m/s, perpendicular to the wall ?A. 0.2 NB. 0.4 NC. 40 ND. 20 N |
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Answer» Correct Answer - C `F=(DeltaP)/(Deltat) =4/0.1=40 N` |
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