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Old Sep 21st 2009, 07:33 PM   #1
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Challenge Problem-Text Book motion on an inclined plane

I really need help with this question, Im not sure what to do with the velocity value or what to even plug in to solve for the angle. I think the acceleration is -9.8sin20, but I could be wrong. Could someone plz post an approach to this problem.

Thx in advance
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Old Sep 21st 2009, 11:27 PM   #2
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You are right . The accln down the plane is -9.8 sin 20.

Now imagine you are on a planet with g = -9.8 sin 20 and

solve as usual for the desired range
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Old Sep 22nd 2009, 04:26 AM   #3
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I don't understand how to solve it though. Like aren't we suppose to derive component velocities from a specific angle. I don't understand which formula could be used to incorporate the distance and an angle or even if the components are needed for the velocity.
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Old Sep 22nd 2009, 05:08 AM   #4
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The vertical component is v sin theta, the horz component is v cos theta. Quite a few such problems have been recently solved here.
The only difference being the value of g in this case. I suggest you check the links
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