What layer is above the troposphere

In order to do work, the force vector must be question 1 options: in a different direction than the acceleration vector. in a different direction than the displacement vector. in the same direction as the displacement vector and the motion. in the same direction as the acceleration vector.

Match each type of lever with the correct diagram. 1. first-class 2. third-class 3. second-class

Derive the formula 2as=v² -u² where the formula have have usual meanings