- #1
chamonix
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Homework Statement
A ball of mass 522 g starts at rest and slides down a frictionless track. It leaves the track horizontally, striking the ground.
a. at what height above the ground does the ball start to move?
Homework Equations
I have:
mgh=mgh_2+1/2mv^2
which simplifies to:
h=h_2+1/2mv^2
The Attempt at a Solution
I got:
.2+1.25=1.45
I think that 1.45 is right, but I'm a little confused on how I got to that point. Any help is most appreciated. Thanks.