Question

Discuss which objects in the above pictures are in motion. What differences are seen in their motion?

Answer 1

The different objects shown in the pictures are in motion in different ways. Motion means a change in the position of an object with time.

1. Boy kicking the football: The boy is moving his leg while kicking the football. The football moves from one place to another, usually along a curved path.
2. Spinning top: The top moves by rotating around its own fixed axis. This type of motion is called rotational motion.
3. Boy throwing the ball: The ball moves away from the boy and travels through the air along a curved path. Its position changes continuously with time.
4. Aeroplane: The aeroplane moves from one place to another through the air. It shows translational motion and can travel in a straight or curved path depending on its direction.
5. Potter’s wheel: The wheel rotates around a fixed central axis. This is also an example of rotational motion.

Differences in their motion

• The objects in the pictures do not all move in the same way. The football and the thrown ball move from one place to another, while the spinning top and potter’s wheel rotate around a fixed axis. The aeroplane moves forward from one place to another and can change its direction while flying.
• Thus, motion can be of different types, such as straight-line motion, curved motion, and rotational motion. The path and manner in which an object moves help us identify the type of motion.