<Dd> s = Δ z 0.06 = 8.3 V 2 g, or s = 8.3 88 2 32.2 ≈ 2000 ft . (\ displaystyle s = (\ frac (\ Delta z) (0.06)) = 8.3 (\ frac (V ^ (2)) (g)), \ quad (\ mbox (or)) \ quad s = 8.3 (\ frac (88 ^ (2)) (32.2)) \ approx 2000 (\ mbox (ft)).) </Dd> <P> This formula uses the fact that the weight of the vehicle is W = mg . </P> <P> The work of forces acting at various points on a single rigid body can be calculated from the work of a resultant force and torque . To see this, let the forces F, F...F act on the points X, X...X in a rigid body . </P> <P> The trajectories of X, i = 1,..., n are defined by the movement of the rigid body . This movement is given by the set of rotations (A (t)) and the trajectory d (t) of a reference point in the body . Let the coordinates x i = 1,..., n define these points in the moving rigid body's reference frame M, so that the trajectories traced in the fixed frame F are given by </P>

Which of the following is the best scientific definition of work