A mover pushes a heavy chair up an inclined plane into a truck. The inclined plane is 2 m long, and it lifts the chair to a height of 1 m. The chair’s weight is 360 N. The mover has to exert 220 N of force to slide the chair up the ramp. What is the mechanical efficiency of the inclined plane?

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction 

Answer the above statement is ( false );

I'd go for the one that says that knees are fulcrums, lower legs are levers and the ankles hold loads.hope it ,happy homework/ study/ exam!

Hi. i believe this is called a scientific  theory.cheers!