for part c, i found the total energy (KE + PE) and i got 26.2143. THen i did 26.2143 = (1/2)mv^2 and solved for v and got 9.599 m/s^2. Is that my velocity as it hits the ground? Dont i have to account for the friction?
Alright i did that, i found the speed as it leaves the track and i got : 7.407 m/s.
So to find the height... because KE = PE... then (mv^2)/2 = mgh --> h=(v^2)/2g and i got 2.7963 for my height...? is that correct?
Thats as far as I am getting, other than that i don't know how to do part...
I am stuck on this 3 part problem and don't really know what to dooo, any help would be greatly appreciated =)
A block (mass 569 grams) starts at rest and slides down a frictionless track except for a small rough area on a horizontal section of the track. It leaves the track horizontally...