Steady or Not?
Uniform motion, speed — and two trains to compare
What this lesson covers
Why it matters
On a long straight track, a train can tick past the kilometre stones in perfect rhythm — same distance, every minute. That steady rhythm has a name.
Predict first
A body covering EQUAL distances in EQUAL times has…
Uniform = unchanging pace. A city bus stopping and lurching is non-uniform; the express on open track comes close to uniform.
- uniform motion — correct
- non-uniform motion
- no speed
What you do
Set train B's speed and direction — make the two trains equal-but-opposite, then same-way-but-different.
Check yourself
Speed = …
How much ground per unit time: a car doing 60 km in 1 hour has speed 60 km/h.
A bus in city traffic — stopping, starting, crawling — shows…
Unequal distances in equal times = non-uniform — most real motion is.
A cyclist covers 30 km in 2 hours. Average speed?
30 ÷ 2 = 15 km/h.
- distance ÷ time — correct
- distance × time
- time ÷ distance
- non-uniform motion — correct
- uniform motion
- oscillatory motion
- 15 km/h — correct
- 60 km/h
- 32 km/h