Question

Distinguish between uniform and non uniform motion . Give one example of each.

Answer 1

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Explanation:

It depends on what level you're talking about.

If you're looking at it from a layperson's perspective, it's any motion where you are going the same velocity at all times, ie you don't turn or change speed. So driving in a straight line, or sitting still would be examples, whereas standing up, or running in circles wouldn't be. Sometimes you would or wouldn't count a constant rotational velocity, depending on the situation. So for instance, a Ferris Wheel might be considered non-uniform especially to someone riding it, but a top spinning at the same constant speed could count as uniform.

On the other hand, physicists often talk about uniform motion as motion in an inertial frame. So someone in an orbit would count, or someone floating around in deep space, or even someone who just fell off a cliff. It seems counter intuitive that someone accelerating downwards off a cliff would be in 'uniform motion', but that's just because we're biased to living in a constantly accelerating frame sitting on a planet's surface. Generally they'll also count constant rotational momentum as well, but not always. Basically, imagine you we're following whatever object, but you couldn't see outside a small box around you. Simply ask what would happen if you dropped a ball. If it started moving from where you left it, you're in non-uniform motion.

Answer 2

Answer:

Uniform motion:

• In Uniform motion, movement of a body is along the straight line with constant speed.

• In uniform motion, body covers equal distance in equal interval of time.
• Distance- time graph of uniform motion has a straight line slope.
• Eg. A car going along a straight level road at steady speed, A train going along the tracks at steady speed etc.

Non-Uniform motion:

• In non uniform motion, movement of a body is along the straight line with variable speed.

• A body is said to be in a non-uniform motion if it travels unequal distances in equal intervals of time.
• Distance-time graph of non uniform motion has a curved line slope.
• Eg. The motion of a train leaving or entering the platform, The motion of a bus on a crowded road etc.

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