Tangential velocity (Vt) is the arc length (a) covered per unit of time (t):
Vt=a/t
Period (p) is the time needed to cover a complete circle, which length would be pi*2*radius (the same as the circle perimeter formula).
So you have to replace a for the perimeter and t for the period.
Vt=pi*2*r/p
Vt=pi*2*(4 × 10^10 m)/ (2 × 10^7 s)=12566m/s
(The number can vary a little with rounding – the difference is less than 1%).
Answer:
The tangential speed of the satellite is 12,566 m/s.
Explanation:
e2020
