Answer:
Tangential speed, v = 314.15 m/s
Step-by-step explanation:
It is given that,
Mass of the object, m = 15 kg
It is moving in a circle of radius, r = 10 m
Time period, t = 0.2 seconds
We need to find the tangential velocity of the object. It is given by :

Where
v = tangential speed

v = 314.15 m/s
So, the tangential speed of the object is 314.15 m/s. Hence, this is the required solution.