A rock starts from rest and slides down a hill. Find average friction force and mass.
SEE ATTACHMENT #1 for a diagram showing parameters. A rock starts from rest then slides distance L= 5 m down a concave hill to a point which is h= 3 m below starting point. During the slide, Q= 111 joules of heat are generated, and the final speed is V= 4.8 m/sec. PART a. Find the average friction force. PART b.