State one difference with an example between rotational and circular motion.

Draw the diagram of a man riding a bicycle on a straight track and mark the different motions like
(i) Motion of the man on the track
(ii) Motion of the wheels of the cycle
(iii) Motion of the legs on the pedal.

A $20 \mathrm{cm}$ scale has a broken end and begins from $1.5 \mathrm{cm}$. Which mark of this scale will you use to measure length of an object?

A $20 \mathrm{cm}$ scale has a broken end and begins with $1.5 \mathrm{cm}$. How much will you subtract from the scale to get the correct length of the object?