athena810
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Can you check my physics homework please??
My physics project includes predicting
(1) the time it takes a ball to go down a slide
http://i.imgur.com/TfQI87H.png
I'm not sure if it's right though.
(2) finding the coefficient of friction between me and the slide.
http://i.imgur.com/3P8FPOe.png
Calculations should be correct for the most part, I'm just not sure if I'm doing stuff right. Particularly, I'm not sure about where it goes ff = fa - fnet because then i found the coefficient to be like .4 and that seems really little considering how the differences in times were a lot more.
Homework Statement
My physics project includes predicting
(1) the time it takes a ball to go down a slide
http://i.imgur.com/TfQI87H.png
I'm not sure if it's right though.
(2) finding the coefficient of friction between me and the slide.
http://i.imgur.com/3P8FPOe.png
Calculations should be correct for the most part, I'm just not sure if I'm doing stuff right. Particularly, I'm not sure about where it goes ff = fa - fnet because then i found the coefficient to be like .4 and that seems really little considering how the differences in times were a lot more.