All sellers making retail sales of taxable goods or services in Nebraska are required to register with the state and collect and remit sales tax. As Nebraska is a Streamlined Sales Tax state, out-of-state businesses without a sales tax obligation are encouraged to register for sales tax purposes.
Since the kinetic energy increases with the square of the speed, an object doubling its speed has four times as much kinetic energy. For example, a car traveling twice as fast as another requires four times as much distance to stop, assuming a constant braking force.
Therefore, kinetic energy is directly proportional to both the mass of the object and the square of its speed. This is important because small changes in speed will result in larger changes in kinetic energy. For example, if a car moves twice as fast as another, it will contain four times as much kinetic energy.