Question

A 25 kg child is riding on a swing. If the child travels 8.9 m/s at the bottom of their swing, how high into the air is the child able to swing?

Answer 1

h = 4.04 m

Step-by-step explanation:

Given that,

Mass of a child, m = 25 kg

The speed of the child at the bottom of the swing is 8.9 m/s

We need to find the height in the air is the child is able to swing. Let the height is h. Using the conservation of energy such that,

`mgh=(1)/(2)mv^2\\\\h=(v^2)/(2g)`

Put all the values,

`h=((8.9)^2)/(2* 9.8)\\\\h=4.04\ m`

So, the child is able to go at a height of 4.04 m.