- #1

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Formulas:

Ep=mgh

W=fd

F=ma

a=gh/d

Fr=u*Fn

I know the acceleration, mass, and distance. Using the formulas Ep=F

*d I can do 1.54 * 1.7** 3.38 which is 8.848 J but it isnt correct. I also tried finding the height of the ramp by using the formula a= gh/d and by getting height i can use the formula Ep= mgh but still 8.84. The right answer is 13.3 J but i dont see how. Help? please as soon as possible thanks guys!