Page 512 - SUBSEC October 2017_Neat

UNIT 1
MODULE 1: MECHANICS (cont’d)

SPECIFIC OBJECTIVES EXPLANATORY NOTES SUGGESTED PRACTICAL
ACTIVITIES

3. Physical Quantities (cont’d)

Students should be able to:

1.8. distinguish between A dart board could be used as
precision and accuracy; a practical demonstration of
and, the difference between the
two. Or a makeshift
dartboard - a circular piece
of cardboard and small
pieces of modelling clay as
the darts.
Practical activity on the
distribution of errors in
physical measurements. (See
Appendix II.)

1.9. estimate the uncertainty in Uncertainties can be
a derived quantity from combined according to the
actual, fractional or relationship of the various
percentage uncertainties. quantities, for example,
addition, subtraction,
multiplication and raising to
powers.

2. SI Units

Students should be able to:

2.1. state the base quantities Mass, length, time,
including their symbols and temperature, current,
SI units; luminous intensity and
amount of substance.

2.2. use base quantities or Summary of key quantities, See Appendix II for
units to obtain symbols and units. suggested practical activity.
expressions for derived
quantities or units;

2.3. use prefixes and their Solve problems where the
symbols to express indices have to be
9
multiples (up to 10 ) and substituted before
sub-multiples (down to calculation.
-12
10 ) of units of base and For example, C= 6km /20 µs
derived quantities; and,

CXC A16/U2/17 12