Page 514 - SUBSEC October 2017_Neat

UNIT 1
MODULE 1: MECHANICS (cont’d)

SPECIFIC OBJECTIVES EXPLANATORY NOTES SUGGESTED PRACTICAL
ACTIVITIES

4. Motions (cont’d)

Students should be able to:

3.6. solve problems involving Requires only a non- Investigate projectile
bodies undergoing calculus approach. motion using a device or
projectile motion; Consider bodies launched machine such as a cricket
from level ground or from bowling machine, trebuchet
elevation. (catapult) or ballistic
pendulum. Additionally,
virtual experiments of
projectile motion can be
explored.

3.7. show that projectile Include both vertical and
motion is parabolic; horizontal projection.

3.8. state Newton’s laws of An UNBALANCED external
motion; force is required to change
the velocity.

3.9. explain ‘linear
momentum’;

3.10. state the principle of
conservation of linear
momentum;

3.11. apply the principle of For example, collisions in Use Newton’s cradle.
conservation of linear one or two dimensions,
momentum; such as in billiards,
“explosions” as in the
recoil of a gun.

3.12. distinguish between Collisions should be limited
inelastic and perfectly to two objects only.
elastic collisions;

3.13. explain the concept of the
impulse of a force;

3.14. use the concept of the
impulse of a force;

CXC A16/U2/17 14