Question

In one second a particle goes from a point A to another point B moving in a semi circle of radius one metre as shown in the figure. The average speed is

• A. $3.14m/s$
• B. $2m/s$
• C. $1m/s$
• D. $0m/s$

Answer 1

The correct option is A $3.14m/s$

Given radius, $r{=}^{\prime }{1}^{\prime }m$

Total distance $=\pi r$

$=\left(3.14\right)\left(1\right)$

$=3.14m$

Total time $=1sec$

Avg. speed $=\frac{3.14}{1}$

$=3.14m/s$