1/28/14, Tuesday

Post date: Jan 28, 2014 1:52:53 PM

Learning Targets

(18) Find the terminal velocity of an object moving vertically under the influence of a retarding force dependent on velocity.

(19) Students should understand Newton’s Third Law so that, for a given system, they can identify the force pairs and the objects on which they act, and state the magnitude and direction of each force. (video)

(20) Students should be able to apply Newton’s Third Law in analyzing the force of contact between two objects that accelerate together along a horizontal or vertical line, or between two surfaces that slide across one another.

(21) Students should know that the tension is constant in a light string that passes over a massless pulley and should be able to use this fact in analyzing the motion of a system of two objects joined by a string.

(22) Students should be able to solve problems in which application of Newton’s laws leads to two or three simultaneous linear equations involving unknown forces or accelerations.

Activities

- Discuss lab journals, work time to complete data collection
- Questions on learning targets 6, 12-17
- Assessment 6 (LT 6, 12-17)
- Instruction
  - Terminal velocity
  - Newton's 3rd law

Practice

Pages 159 - 165

- LT 18: Questions 12, 13, Problems 31, 32
- LT 19: Problems 34, 35
- LT 20: Problems 34, 35, 66
- LT 21: Questions 16-20, Problems 36 - 38, 70, 74
- LT 22: Problems 71, 72