Question

A ball on a string makes 25.0 revolutions in 9.37 s, in a circle radius 0.450 m. What is it’s velocity?

Answer 1

7.54 m/s

Step-by-step explanation:

C = 2πr

C = 2π (0.450 m)

C = 2.827 m

v = d / t

v = 25.0 (2.827 m) / (9.37 s)

v = 7.54 m/s