Paradox101
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Homework Statement
A person pushes an object along an incline at an average speed of 15km/hr.After reaching the top, he pushes the object back from top to bottom, where the average speed is 30km/hr.if the length along which he pushes( hypotenuse of the inclined plane) is 4km and the force is constant, Find the height of the inclined plane.THE QUESTION CAN BE EASILY GRASPED BY LOOKING AT THE REFERENCE PIC.
Homework Equations
Don't know which one to use.
The Attempt at a Solution
Ok, so frankly i got nothing.but, since the force is constant and the speeds are different, i guess we can put F1=mv1/t1=mv12/s?
And F2=F1+mgsinΘ? That's all i got.please help
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