Will mark study the graph shown. it is a graphic of a car trip taken by karen and her mother. the starting position (0,0) is their home. calculate the average speed of the car during the first hour of the trip: 1 miles/hour, 5 miles/hour, 40 miles/hour or 25 miles/hour?

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?