Multiple Select QuestionSelect all that applyIn applying the law of conservation of momentum to collisions, which of the following can occur? Note that the objects do not stick on impact.Multiple select question.If the target object has less mass, then the incoming object will continue in its original direction after the impact but with increased speed.If the two objects have the same mass, the incoming object stops and the target object moves off with the same speed that the incoming one had.If the target object has more mass, the incoming object bounces off the heavier target and they move apart in opposite directions.If the two objects have the same mass, the incoming object continues in the opposite direction after impact but with reduced speed.
Question
Multiple Select QuestionSelect all that applyIn applying the law of conservation of momentum to collisions, which of the following can occur? Note that the objects do not stick on impact.Multiple select question.If the target object has less mass, then the incoming object will continue in its original direction after the impact but with increased speed.If the two objects have the same mass, the incoming object stops and the target object moves off with the same speed that the incoming one had.If the target object has more mass, the incoming object bounces off the heavier target and they move apart in opposite directions.If the two objects have the same mass, the incoming object continues in the opposite direction after impact but with reduced speed.
Solution
The correct answers are:
- If the target object has less mass, then the incoming object will continue in its original direction after the impact but with increased speed.
- If the two objects have the same mass, the incoming object stops and the target object moves off with the same speed that the incoming one had.
- If the target object has more mass, the incoming object bounces off the heavier target and they move apart in opposite directions.
The last statement is incorrect. If the two objects have the same mass, the incoming object will not continue in the opposite direction after impact but with reduced speed. Instead, it will stop and the target object will move off with the same speed that the incoming one had. This is because of the law of conservation of momentum which states that the total momentum before the collision is equal to the total momentum after the collision.
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