Page 516 - SUBSEC October 2017_Neat

UNIT 1
MODULE 1: MECHANICS (cont’d)

SPECIFIC OBJECTIVES EXPLANATORY NOTES SUGGESTED PRACTICAL
ACTIVITIES

6. Motions (cont’d)

Students should be able to:

3.21. use the equations of
circular motion to solve
problems;

3.22. use Newton’s Law of GM M 2
1
Universal Gravitation in F = r 2
problems involving
attraction between masses;

F
3.23. explain the term g = , units for g: Nkg
-1
gravitational field m
strengths (at the Earth’s
surface or above);

3.24. use the term gravitational (Include relationship with
field strengths (at the height)
Earth’s surface or above);

3.25. solve problems involving Include apparent
circular orbits; and, weightlessness.

3.26. discuss the motion of Compare with other
geostationary satellites orbits, for example, those
and their applications. of Global Positioning
System (GPS) satellites.

4. Effects of Forces

Students should be able to:

4.1. explain the origin of the Upthrust due to pressure See Appendix II for
upthrust acting on a body difference. suggested practical
wholly or partially immersed activity.
in a fluid;

4.2. explain the nature, cause Include drag forces in Use a one mass (weight) on
and effects of resistive fluids and frictional forces, the desk attached to a mass
forces; and the effects of air hanging off the edge of the
desk.
resistance on rain drops.

CXC A16/U2/17 16