A piece of ice slides down a 45^(@) incline in twice the time it takes to slide down a frictionless 45^(@) incline. What is the coefficient of friction between ice and the incline?

A piece of ice slides down a 45^(@) incline in twice the time it takes

1.	A piece of ice slides down a 45^(@) incline in twice the time it takes to slide down a frictionless 45^(@) incline. What is the coefficient of friction between ice and the incline?
Answer» ANSWER :0.75