A 5kg object initially at rest at a height of 5m on an incline of 30 degrees starts sliding down. At the bottom it is travelling at 5m/s. Hint: You will need to start by assuming there is friction.

(a) How far did the object move along the incline?

(b) What acceleration does the object experience?

(c) How long did it take for the object to slide down the incline?

(d) What acceleration would you expect for the object on the incline due to gravity (and normal force)?

(e) How much friction if any did the object experience?