A 0.570-kg ball is dropped from rest at a point 4.40 m, Ask an Expert

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A 0.570-kg ball is dropped from rest at a point 4.40 m above the floor. The ball rebounds straight upward to a height of 3.20 m. Taking the negative direction to be downward, what is the impulse of the net force applied to the ball during the collision with the floor?

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