The minimum speed needed a non-propelled object to escape from the gravitational influence of a massive body, that is to achieve an infinite distance from it. I think
Turbine transformer generator⇆
Work, in physics, is said to be done when a certain force applied to an object would result to the movement of the object from one point to another. To calculate, we multiply the force with the displacement. We do as follows:
Work = 20 N (10 m) = 200 Nm or 200 J
The answer is D because instantaneous means at a particular point in time