Which example demonstrates constant speed with changing direction?

An object starts from rest at point f and speeds up continuously as it moves around an oval. a. choose a point about 1/8 th of the way around the oval from point f, and label it point g. draw a vector to represent the velocity of the object at point g. b. determine the change in velocity vector   between points f and g.

In a system, when potential energy decreases, then entropy also decreases. true false

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain