A 10-N force is applied to push a block across a frictional surface at constant speed for a displacement of 5.0 m to the right. Which of the forces shown are doing work?

Answer///air resistance,drag;

Answer (d) valerie rides her bike south at 8 kilometers per hour///owen jogs south at 8 kilometers per hour ;

If one were to put the y value into the equation, they could find out what x is for a certain value of y.  putting in the value of y (1), we get the equation: 1=4x-12=4xx=0.5this means that the value of x when why is 1 is x=0.5