A 12 kilogram object moving with a speed of 8ms collides, Ask an Expert

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A 1.2 kilogram object moving with a speed of 8m/s collides perpendicularly with wall and emerges with a speed of 6m/s in the opposite direction. If the object is in contact with the wall for 2.0 millisecond, find the magnitude of the average force on the object by the wall?

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