That can only be happening if the mass mysteriously increased somehow. I'd like to know how in the world THAT happened.
Answer:
the tangential velocity of the student is 4.89 m/s.
Explanation:
Given;
the radius of the circular path, r = 3.5 m
duration of the motion, t = 4.5 s
let the student's tangential velocity = v
The tangential velocity of the student is calculated as follows;

Therefore, the tangential velocity of the student is 4.89 m/s.
1. A broom swishing against the floor
2. a bee buzzing
3. a car engine
hope this helps!