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UNTUK GURU DAN PELAJAR TINGKATAN 4

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NAME : ENCIK MOHAMED TARMIZI ABD KADIR FORM 4 : 4 CERDIK, 4 CERDAS, 4 PINTAR
LEARNING OUTCOMES :By the end of this lesson, you should be able to:2.1Linear Motion
* Define distance and displacement* Define speed and velocity* Define acceleration and deceleration* Calculate speed and velocity* Calculate acceleration and deceleration* Solve problems on linear motion with uniform acceleration
2.2 Motion Graphs
* Plot and interpret displacement-time and velocity-time graphs* Deduce from shape of displacement-time graph* Determine distance, displacement and velocity from a displacement-time graph* Deduce from the shape of a velocity-time graph* Determine distance, displacement, velocity and acceleration from
v-t
grph* Solve problems on linear motion with uniform acceleration
2.3 Inertia
* Explain what inertia is* Relate mass to inertia* Give examples of situations involving inertia* Suggest ways to reduce the negative effects of inertia
2.4 Momentum and Conservation of Momentum
* Define the momentum of an object* Define momentum as the product of mass and velocity, p = mv* State the principle of conservation of momentum* Describe applications of conservation of momentum* Solve problems involving momentum
2.5 Effect of Forces
* Describe the effects of balanced forces acting on an object* Describe the effects of unbalanced forces acting on an object* Determine the relationship between forces, mass and acceleration, F = ma* Solve problem using F = ma
2.6 Impulse and Impulsive Force
* Explain what an impulsive force is* Give examples of situations involving impulsive force* Define impulse as a change of momentum, Ft = mv - mu* Define impulsive force as the rate of change of momentum in a collision2
* Explain the effect of increasing / decreasing time of impact on the impulsive force* Describe situations where an impulsive force needs to be reduced* Describe situations where an impulsive force is beneficial* Solve problems involving impulsive forces
2.7 Safety Features in the Design of Vehicles
* Describe the importance of safety features in vehicles
2.8 Gravity
* Explain acceleration due to gravity* State what a gravitational field is* Define gravitational field strength* Determine the value of acceleration due to gravity* Define weight as the product of mass and acceleration due to gravity, W = mg* Solve problems involving acceleration due to gravity
2.9 Analyzing a scientific investigations
* Describe situations where forces are in equilibrium* State what a resultant force is* Add two forces to determine the resultant force* Resolve a force into two effective component forces* Solve problems involving forces in equilibrium
2.10 Work, Energy, Power and Efficiency
* Define work as the product of applied force and displacement of an object, W= Fs* State that when work is done, energy is transferred from one object to another * Define kinetic energy and state that E
k
= ½ mv
2
* Define gravitational potential energy and state that E
p
= mgh* State the principle of conservation of energy
* Define power * Explaine what efficiency of a device is* Solve problems involving work, energy, power and efficiency
2.11 The Importance of Maximising the Efficiency of Devices
* Recognise the importance of maximising efficiency of devices in conservingresources
2.12 Analyzing a scientific investigations
* Define elasticity* Define Hooke’s Law* Define elastic potential energy and state that E
p
= ½ kx
2
* Describe applications of elasticity* Solve problems involving elasticity3
2.1 : Linear Motion : Motion along a straight line.
Examples:
ã
a car moving on a straight road
ã
a person walking down a hallway
ã
a sprinter running on a straight race course
ã
dropping a pencil
ã
throwing a ball straight up
ã
a glider moving on an air track
ã
and many others...1.
Distance
: The total path length travelled from one location to another.It is a scalar quantity. The SI unit is metre (m)2.
Displacement
: The distance between two locations measured along the shortest pathconnecting them, in a specified direction.It is a vector quantity The SI unit is metre (m)
Example 1:
If Mawi takes 10s to finish each of following paths AB, find the total distance anddisplacement travelled .8m6m1m2m figure 2.1A B(i) Total distance travelled : 2m +1m + 6m + 8m + 8m = 25m4

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