Grade 8 Unit 03: Force and Motion (25 days)

TEKS

(6)  Force, motion, and energy. The student knows that there is a relationship between force, motion, and energy. The student is expected to:

(A)  demonstrate and calculate how unbalanced forces change the speed or direction of an object's motion;

(B)  differentiate between speed, velocity, and acceleration; and

(C)  investigate and describe applications of Newton's three laws of motion such as in vehicle restraints, sports activities, amusement park rides, Earth's tectonic activities, and rocket launches.

 

Assignments

1. Read 4.1 Motion, Speed, and Velocity pp. 162-167
   1. 1. What is speed? What is the difference between instantaneous and average speed?
   2. 2. What is velocity?
2. Read 4.2 Acceleration pp. 168-173
3. Read 4.3 The Nature of Force pp. 174-179
   1. 1. Do the Forces and Motion: Basics activity on PhET.
4. Read 4.4 Friction and Gravity pp. 180-187
5. Read 4.5 Newton's Laws of Motion pp. 188-196
   1. 1. Sometimes Newton's First Law of Motion is called the Law of Inertia. What is the first law, what is inertia, and does it work to call it the Law of inertia, and why?

Review

Before you take the test on this unit, you should do the review.