Physics Not Complex

QUICK CHALLENGE:
A car moves at 20 m/s north, then changes direction to east (same speed)…
👉 Has its velocity changed? YES or NO?
Drop your answer 👇

REAL-LIFE CONNECTION

✔ When you press a car accelerator → velocity increases

✔ When you apply brakes → velocity decreases

✔ When turning → direction changes → velocity changes

THINK OF IT LIKE THIS:
If every second your velocity changes…
👉 You are accelerating!
Example:
0 m/s → 5 m/s → 10 m/s
👉 Velocity is increasing with time

RELATIONSHIP BETWEEN VELOCITY AND TIME
This is where it gets interesting 👇
👉 Velocity depends on time
✔ If velocity is constant → motion is uniform
✔ If velocity changes with time → motion is accelerated

4️⃣ INSTANTANEOUS VELOCITY
👉 Velocity at a particular moment
Example:
What your speedometer shows at a specific time

3️⃣ AVERAGE VELOCITY
👉 Total displacement ÷ total time
Example:
If you move 100 m east in 20 s
👉 Average velocity = 100÷20 = 5 m/s east

Always remember that displacement is distance in a particular direction.

2️⃣ NON-UNIFORM VELOCITY
👉 When velocity is changing.

This happens when:
✔ Speed changes
✔ Direction changes
✔ Or both

Example:
A car turning a corner 🚗

1️⃣ UNIFORM VELOCITY
👉 When velocity is constant
✔ Same speed
✔ Same direction
Example:
A car moving 60 km/h east continuously

TYPES OF VELOCITY (VERY IMPORTANT!)

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If a car moves at 70 km/h west…
👉 Is that speed or velocity?
Let’s see who gets it right 👇

FINAL TAKEAWAY
👉 Speed tells you movement ( Distance covered)
👉 Velocity tells you movement with direction ( Change in position).