Could someone explain why you divide m * v^2 in the kinetic energy eq by 2?

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

The graph represents the distance a car travels over time while on the highway. which statement about the car's trip is accurate? a) the car does not move over time. b) the car travels at a constant velocity. c) the car's velocity increases constantly over time. d) the car's velocity decreases constantly over time.