5. what type of motion do the following objects have?
1. the marchpast of soldiers
1. the needle of sewing machine
ih. child sitting on a moving giant wheel
iv. surface of a drum being played
v. a spinning top

The motion of soldier’s march-past is rectilinear motion.

The motion of needle of the sewing machine and surface of drum played are in periodic motion.

The motion of child sitting on a giant wheel and spinning top are in rotational motion.

Explanation:

Motion is defined as the change in the position of an object with respect to time.  

The soldiers march in a straight direction. So it is said that their motion is in rectilinear or straight motion.  The motion which repeats with a certain time interval is known as Periodic motion. Here the needle of the sewing machine repeats the motion, so it is categorized as periodic motion.  Giant wheel is a huge body which follows rotational motion on a child sitting on it.  The surface of drum played is also a periodic motion because the particular thing repeats in time intervals.  A spinning top plays rotational motion as it rotates around a single axis as a reference axis.

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