Chapter 2: Mechanical Motion Part 1 (2.1 - 2.4)

Chapter 2: Mechanical Motion Part 1 (2.1 - 2.4)

SC.912.N.1.2  
Describe and explain what characterizes science and its methods.
LAFS.1112.RST.2.4
Determine the meaning of symbols, key terms, and other domain-specific words and phrases as they are used in a specific scientific or technical context relevant to grades 11–12 texts and topics.
LAFS.1112.RST.1.2
Determine the central ideas or conclusions of a text; summarize complex concepts, processes, or information presented in a text by paraphrasing them in simpler but still accurate terms.

Bellwork: Preview Video HERE

In class reading of 2.1 - 2.4

1. Define the following Key Terms: force, net force, vector, vector quantity, scalar quantity, mechanical equilibrium, equilibrium rule, support force, resultant
2. Distinguish between force and net force.
3. State the metric unit for force.
4. Describe tension and weight using the example of a 2 pound bag of sugar suspended from a spring scale.
5. Compare and contrast vector quantities with scalar quantities.
6. State the mathematical equation for the equilibrium rule, and then draw a picture that shows you understand it (hint: use vectors!)
7. For an object at rest on a horizontal surface, what is the support force equal to?
8. What is the net force on a bathroom scale when a 110 pound person stands on it?
9. Suppose you stand on two bathroom scales with your weight evenly distributed between the two scales. What is the reading on each of the scales? What happens when you stand with more of your weight on one foot than the other?
10. Explain the difference between static equilibrium and dynamic equilibrium.

When finished, please complete the following problems from your text book (pages 24-27) on a separate sheet of paper to be turned in:

• 21, 22, 25, 28, 32, 43, 44