MICRO LESSON 1
What is Motion?
Picture it:
A car changes its position from one street to another. That change is motion.
Simple:
An object is in motion when its position changes with time relative to a reference point.
Example:
A bus moving past a bus stop.
Quick Check:
Is a parked car in motion relative to the road?
MICRO LESSON 2
Reference Point
Picture it:
A passenger sitting in a moving train is at rest relative to the seat but moving relative to the ground.
Simple:
Motion depends on what you compare the object with.
Example:
You are still relative to your chair but moving with Earth.
Quick Check:
Can the same object be at rest and in motion?
MICRO LESSON 3
Distance
Picture it:
If you walk around a park, distance counts the full path.
Simple:
Distance is the total path travelled.
Example:
One full 400 m track lap gives 400 m distance.
Quick Check:
Can distance be zero after moving?
MICRO LESSON 4
Displacement
Picture it:
If you return to where you started, your displacement is zero.
Simple:
Displacement is the shortest straight-line change from start to finish with direction.
Example:
One track lap: distance 400 m, displacement 0.
Quick Check:
Can displacement be less than distance?
MICRO LESSON 5
Speed
Picture it:
Two cyclists travel the same distance, but the one taking less time is faster.
Simple:
Speed = distance ÷ time.
Example:
100 km in 2 hours = 50 km/h.
Quick Check:
What is the speed for 60 km in 3 hours?
MICRO LESSON 6
Velocity
Picture it:
A car moving at 40 km/h east has velocity because direction is included.
Simple:
Velocity is speed in a specific direction.
Example:
20 m/s north.
Quick Check:
Can speed stay same while velocity changes?
MICRO LESSON 7
Acceleration
Picture it:
A bus leaving a stop becomes faster every second.
Simple:
Acceleration is the rate of change of velocity.
Example:
Velocity rises from 0 to 20 m/s.
Quick Check:
What is acceleration if velocity stays constant?
MICRO LESSON 8
Motion Graphs
Picture it:
Graphs turn movement into a picture.
Simple:
A distance-time graph shows how distance changes with time; slope represents speed.
Example:
A steeper line means greater speed.
Quick Check:
What does a horizontal distance-time line show?