Recent content by nvallettejr

so far i have a=3m/s2 t=7.285s v= 21.855m/s i am still stuck on how to get the friction coefficient from this information.

Okay that sounds right I have that done but how do we get the rotational energy after 5 seconds??

was your last post unfinished?

[b]1. A disk with radius of 0.3m and a mass of 4kg is free to rotate about an axle through its center. A cord wrapped around the circumference supports a weight with mass 5kg. a) What is the acceleration of descending mass if it is released? b) 5 seconds after release what is the...

I'm not quite sure how to find the velocity after the push off. And would our total distance be 79.6m (80-0.4)?

1. A 50 kg Skater pushes off horizontally for a distance of 0.4m with a force of 150N. If she travels 80m before stopping, what is the coefficient of friction? I am completely lost on this problem, can someone please assist me? Thanks.