A person throws a ball at a brick wall.The ball hit the wall perpendicular with a speed of 4m/s .calculate the change in momentum of the ball.
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speed of.ball wile hitting=4m/s
let it's mass be m
now momentum before hitting=4m
momentum after hitting (-4m) because direction changes.
now change in momentum=4m-(-4m)
◆◆=8m ans.
let it's mass be m
now momentum before hitting=4m
momentum after hitting (-4m) because direction changes.
now change in momentum=4m-(-4m)
◆◆=8m ans.
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