Question

A ball of 1kg strikes a wall with velocity 1m/s at an angle of 60 degrees with the wall and reflects at the same angle. If it remains in contact with wall for 0.1 seconds, then the force is

Answer 1

Answer:

Simply,,in horizontal direction,,there is no change in momentum,,because,there is no force acting in horizontal direction,,but in vertical direction normal force is acting ,,that why change in vertical momentum is equal to mu.cos(theta)-(-mu.cos(theta))=.cos(theta),,where m is the mass of the particle,,u is the speed ,,and theta=45degree

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Answer 2

the answer is ....

$10\sqrt{3 }$

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