Question

Which formula can be used to find tangential speed of an orbiting object?

Answer 1

According to my calculation the answer for this question would have to be the first one! 

Answer 2

A)
`v = (2\pi r)/(T)`

Step-by-step explanation:

As we know that the speed of the object is defined as the the ratio of total distance and total time taken

now as we know that here the distance along the path of the orbiting object is total length of the circle

so it is given as

`L = 2\pi r`

also we know that

time period to complete the orbit is given as

`t = T`

now the speed is given as

`v = (d)/(t)`

`v = (2\pi r)/(T)`