Physics · Chapter 01

🏃 Motion & Speed

Distance, time, velocity in action.

💡 The Core Idea

Motion means an object's position is changing over time. Speed tells us how fast — distance covered per second.

If a car covers 60 km in 1 hour, its speed is 60 km/h. The formula is simple:

speed = distance ÷ time

When speed has a direction too, we call it velocity. A car going 60 km/h north has both speed and direction.

Usain Bolt — fastest human, 9.58 s for 100m = ~10.4 m/s
Usain Bolt — fastest human, 9.58 s for 100m = ~10.4 m/sWikimedia Commons / CC BY-SA 3.0
Stroboscope image of falling ball — equal time intervals show acceleration
Stroboscope image of falling ball — equal time intervals show accelerationWikimedia Commons / CC BY-SA 3.0
🎬

Watch It Move

Animation
10m 30m 50m 70m SPEED 20 m/s TIME 0.0 s

A red car cruising on the highway. Speed × Time = Distance covered.

🧪

Try It Yourself

Experiment

Slide the speed and time. Watch how distance changes — and see the car move faster in the animation above.

20 m/s
5 s
Speed × Time100 m
So in 5s at 20 m/s, the car travels 100 metres.