An upward moving elevator is slowing down. Which of the following force diagrams could be representative of the forces acting upon the elevator?

Which instrument is used to measure air temperature

What are similarities and differences between refraction, reflection, diffraction and absorption?

Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?