Question

Q.3. Which of the following is not a combination of two motions ?
(a) Movement of bicycle
(b) Movement of a player on ground
(c) Motion of a ball on ground
(d) Rotation of earth.​

Answer 1

Answer:

rotation of earth

Explanation:

only earth rotates

Answer 2

Answer:

Movement of a player on ground is not a combination of two motions.

Explanation:

Movement of player in ground*: In this case player moves in any direction linearly or circularly.Bicycle movement: the wheels move twice. one is linear and the other is circular.

The wheel of the rolling bicycle and the rolling ball have both circular and rectilinear components of motion. As the Earth revolves around the Sun, it makes both a rotary motion on its axis and a circular motion.

Additional information about movement:

movement, in physics, a change in body position or orientation over time. Movement along a line or curve is called a translation. Movement that changes the orientation of the body is called rotation. In both cases, all points on the body have the same velocity (directed velocity) and the same acceleration (time rate of change of velocity). The most general motion combines both translation and rotation.

Motion related two more questions:

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