PLS HELP, 20 POINTS Which statement accurately describes the motion of the object in the graph above?
A. It moved from 3 cm to 10 cm at a constant speed of 2 cm/s.

B. It moved from 0 cm to 6 cm at an average speed of 1 cm/s.

C. It moved from 0 cm to 10 cm at an average speed of 2 cm/s.

D. It moved from 3 cm to 6 cm at a constant speed of 3 cm/s.

Using a wheel and axle, a farmer is trying to lift a bucket of water from the bottom of a well. the larger wheel has a radius of 40 cm compared to the axle that has a radius of 10 cm. if a bucket of water is 50 n, then how much effort is required to raise it? 12.5 n 200 n 2 n 500 n

=force × distance a. work b. velocity c. pressure d. momentum

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.