Homework Help: Physics

Posted by James on Thursday, June 14, 2012 at 12:23pm.

1. A slingshot is used to launch a 5.00-gram rock. The effective spring constant of the slingshot is 200 N/m. By what distance must the slingshot be stretched in order to launch the rock at 20.0 m/s?

Physics - Elena, Thursday, June 14, 2012 at 1:03pm
kx²/2 =mv²/2.
x=sqrt(mv² /k) =
=sqrt(0.005•20²/200) =0.1 m
Physics - James, Thursday, June 14, 2012 at 1:19pm
Thank you.
Physics - Henry, Friday, June 15, 2012 at 10:47pm
post it.

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