Posted by **Grace** on Thursday, October 11, 2012 at 12:30pm.

The maximum speed of a child on a swing is 4.90 m/s. The child's height above the ground is 0.525 m at the lowest point in his motion. How high above the ground is he at his highest point?

- physics -
**Elena**, Thursday, October 11, 2012 at 6:31pm
h₀=0.525 m, v = 4.9 m/s, H=?

mv²/2= mgh

h= v²/2g

H=h+h₀= v₀²/2g + h₀

- physics -
**Ramakrishna**, Sunday, May 29, 2016 at 11:43am
The above answer is H=21.0675

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