How is constant velocity indicated on a morion map

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

Ineed asap! list 3 examples in which friction us or makes things easier in our daily life. explain the effect of friction for each. *make sure you explain the effect of friction for each example! *

Within a pendulum, as potential energy decreases, energy increases. a. heat b. kinetic c. frictional d. gravitational