A graph titled Position versus Time, with time in second on the x axis, numbered 0 to 12, and position measured in meters on the y axis, numbered 0 to 12. The graph starts at the origin and is a straight line to point (4 s, 12 m). Then a straight horizontal line from (4 s, 12 m) to (6 s, 12 m). Then a line from (6 s, 12 m) to (12 s, 0 m). Using the graph, describe what is happening between 4 and 6 seconds.

The object is moving away from the origin at a constant velocity.
The object is not moving.
The object is moving toward the origin at a constant velocity.
The object is changing velocity.

Avalue that describes how heavy an object is and is related to the force of gravity is

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)

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?