Question

An insect moves along a circular path of radius 10cm with a constant speed.If it takes 1 minute to move from a point on a path to the diametrically opposite point,find (a)the distance covered, (b) the speed, (c) the displacement and, (d) the average velocity.

Answer 1

$$\begin{gathered} Radius=10cm=0.1m \\ diameter=2r=0.2m \\ timetakentoreachthediametricallyoppositeendis1min=60second \\ dis\tan cetravelled=halfofthecircumfrence=\frac{2\pi r}{r}=3.14\times 0.2=0.628m \\ displacement=diameter=0.2m \\ speed=\frac{dis\tan ce}{time}=\frac{0.628}{60}=0.01m/s \\ averagevelocity=\frac{0.2}{60}=0.0033m/s \end{gathered}$$