<span> 1 mi = 1.609 km
so X mi/hr = 1.609 * X km/hr hope this helps!!</span>
In several of the questions you've posted during the past day, we've already said that a wave with larger amplitude carries more energy. That idea is easy to apply to this question.
Answer:
The toy car. An object that isn't moving has no momentum
Explanation:
The answer is the less dense plate slides over the denser plate.