Answer:
Dr Hewitt is able to break the piece of wood in his demonstration given that he had knowledge about the concept of momentum, which is esentially the product of the mass and speed of an object.
Aplying this idea, he used the correct momentum of his hand over a short period of time and that is how he was able to break the piece of wood.
The reason why the profit motive is important in a market economy is that it C. encourages people to open businesses and invent new products.
<h3>Why is there a profit motive in a market economy?</h3>
The profit motive ensures that there is an incentive to make new product and open more businesses to service the needs of the society.
When people know that they will be able to make profit from new enterprise, they are more likely to think up ways to engage in business to make profit.
Find out more on the profit motive at brainly.com/question/933169.
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