**Study Guide for Physics Test #2
Newton's Laws of Motion**

1. State and give an example of each of Newton’s 3 laws of motion.

2. Weight varies with ___________________. Why is this so?

3. Know about balanced and unbalanced forces.

4. What is inertia? What does it mean? Which of Newton’s Laws of Motion deals specifically with “inertia?”

5. What is the formula used in Newton’s 2nd law of motion? What does it mean? What is the unit of measurement?

6. How is weight measured on ANY planet? What is the unit of measurement? What is the formula that is used?

7. The strength of gravity is dependent on two factors. What are they? How are they related? What type of relationship do they have?

8. Essay Question in 3 Parts: Space flight is a direct result of scientists understanding Newton’s laws of motion.

Explain how each law has contributed to space flight.

9. Be able to look at a drawing showing objects in motion or at rest and:

1) Draw vectors of force in the correct places on the illustration;

2) Identify those vectors as to what force it represents; and,

3) Summarize what is happening in the picture by stating how the picture illustrates

one or more of Newton’s Laws of Motion.

10. Be able to solve word problems using this formula: F = m * a

(What is the unit of measurement for FORCE?)

11. Be able to solve word problems using this formula: W = F * D

(What is the unit of measurement for WORK?)

__VOCABULARY__

1. vector

2. inertia

3. gravity

4. Newton

5. balanced force

6. unbalanced force

7. factors that affect gravitational force

8. how Newton’s Laws of Motion made space travel possible

9. momentum

10. Joules