A graph with no grid lines or values titled Position versus Time, shows shows time in seconds on the x axis, and position in meters on the y axis. There are three lines on the graph labeled A, B, and C. All three lines start in the bottom left and point to the top right. Lines A and B both start at the origin with line A steeper. Line C is not as steep as A and B and starts on the y axis further up than the origin and it crosses both lines A and B ending higher than either. Using the information in the graph, compare the motion of runners A, B, and C. Be sure to compare the initial position and velocity of each runner.

Can someone explain to me how to do this problem ?

Steam is generated in a boiler of a cogeneration plant at 10 mpa and 450°c at a steady rate of 5 kg/s. in normal operation, steam expands in a turbine to a pressure of 0.5 mpa and is then routed to the process heater, where it supplies the process heat. steam leaves the process heater as a saturated liquid and is pumped to the boiler pressure. in this mode, no steam passes through a condenser, which operates at 20 kpa. (a) determine the power produced in the turbine and the rate at which process heat is supplied in this mode. (b) determine the power produced in the turbine and the rate of process heat supplied if only 60 percent of the steam is routed to the process heater and the remainder is expanded to the condenser pressure. (3.32 mw; 9.69 mw; 4.25 mw; 5.82 mw)

Which car has the most kinetic energy? a. a car of mass 1000 kg with a speed of 3 m/s b. a car of mass 2000 kg with speed 7 m/s c. a car of mass 1000 kg with speed 7 m/s d. a car of mass 2000 kg with speed 3 m/s