Frictional Force: Inclined Projectile Returns with Half Speed

[zpt3593]

A block is projected up an incline making an angle theta with the horizontal. It returns to its initial position with half its initial speed.


I have absolutely no idea how to do this problem. I would think i would have to use the equation x = x +v(t) + (1/2)at^2 or maybe the equation x= (v^2) / (2ug)

 

[arildno]

A block is projected up an incline making an angle theta with the horizontal. It returns to its initial position with half its initial speed.


I have absolutely no idea how to do this problem

Neither do I. What was the actual question?.

 

[zpt3593]

A block is projected up an incline making an angle theta with the horizontal. It returns to its initial position with half its initial speed.

Find the coefficient of kinetic friction.

This was the original question.

 

[arildno]

Use the work energy theorem.