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100 balls each of mass m moving with speed v simultaneously strike

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100 balls each of mass m moving with speed v simultaneously strike a wall normally and reflected back with same speed, in time t s. The total force exerted by the balls on the wall is 

(1) 100mv/t 

(2) 200mv/t 

(3) 200 mvt 

(4) mv/100t

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1 Answer

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by (51.2k points)
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Best answer

Correct option is (2) 200mv/t 

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