Download Document

4.1 Force
4.2 Newton’s First Law of Motion
4.3 Mass
4-4 Newton’s second Law of Motion
4.5 Newton’s Third Law of Motion
4-6 Weight – The Force of gravity; and the Normal Force
Objectives:
1. Students will define force in terms of a frame of reference.
2. Students will relate the concept of force to Newton’s three laws.
3. Students will compare and contrast weight and mass.
4. Students will list and explain the different type of forces.
Homework: 1-16 pp. 98-99.
Formula Search –Find all formulas state the units and purpose for making
calculations.
Vocabulary to Know:
Force
Gravity
Acceleration
Velocity
Spring Scale
Vector
Aristotle
Galileo
Friction
Net Force
Newton
Inertia
Law of Inertia
Inertial reference frame
Noninertial
Mass
Kilogram
Weight
Applied Force
Dyne
Pound
Slug
4.1 Force:
1. Define Force.
2. What tool is used to measure force?
4.2 Newton’s First Law of Motion:
1. How did Aristotle and Galileo describe the relationship between force and motion?
2. Why is friction considered a force?
3. Explain the concept of “net forces” in a system.
4. Why is Newton’s first law known as the law of inertia?
5. Describe inertial reference frames.
4. 3 Mass:
1. What is mass?
2. Why is mass the measure of inertia in an object?
3. Compare and contrast mass and weight.
4.4 Newton’s Second Law:
1. How does a net force cause an object to accelerate?
2. What is the relationship between acceleration and force?
3. State the relationship of mass, force, and acceleration.
4. What is the mathematical relationship of mass, force and acceleration?
5. What are the units of Force?
6. Explain why Newton’s explanations do not always apply.
4.5 Newton’s Third Law:
1. Explain the special relationship of forces involved in Newton’s Third Law.
2. Describe a few situations in which action/reaction forces are involved.
3. How are we able to walk across a room?
4. Why is it important to use subscripts to identify different forces?
5. If there is an equal and opposite reaction to every action force, how does anything
move?
4.6 Weight – The Force of Gravity; and the Normal Force:
1. What exerts the gravitational force on an object?
2. How can weight be different on the moon?
3. Compare and contrast contact and normal force.
4. Why are weight and normal force not action reaction pair forces?
5. Draw a diagram that shows normal force and weight.
6. Explain the different weight sensations felt in an elevator.