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What physical quantities are tested by verifying the law of conservation of momentum?
Experiments to verify the law of conservation of momentum;

The mathematical expression m 1op=m 1oN+m2OM.

Physical quantity to be measured

1, the mass of the collision ball m 1, and the horizontal displacement OP of the ball when the target ball is not placed.

2. After placing the target ball m2, the horizontal displacement on of the collision ball and the horizontal displacement OM of the target ball.