Ques:The more energy the particles in matter have, the faster and more strongly they vibrate. Don wants to make sure that his particles will move slower, so he will make sure the energy they have is more or less?

Ans:less
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Ques:The full box is harder to move because it has greater mass and therefore greater inertia. Rita added less food to the box. It is now harder or easier to move?

Ans:easier
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Ques:The rocket goes upwards because the hot gases shoot downwards out of the nozzle. The faster the gases go downwards, the faster the rocket goes upwards. If John increases the rate at which gas exits the bottom of his rocket, what will happen to the upward momentum of the rocket? It will increase or decrease?

Ans:increase
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Ques:The older a person is, the greater their chance of developing a cardiovascular disease. An elderly person has a higher or lower risk of developing a cardiovascular disease than a young person?

Ans:
higher
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