Question

A yo-yo falls through a distance of 0.60 m as its string unwinds. if it starts from rest, what is its speed? (model the yo-yo as a solid disc.) m/s

Answer 1

Assuming that the yo-yo free falls and it goes down along the string. That means we can use the derived equations for motions in free fall. The velocity at impact is calculated using this formula:

v = √2gh
v = √(2)(9.81)(0.60m)
v = 3.43 m/s