David was amazing! We live out of state and did everything over the phone. David walked us through the vehicle through Facetime. He was friendly and very helpful and no pressure. We felt like we were ...

The only difference between velocity and speed is that velocity has a direction, and so is a vector quantity. Average velocity = \(\frac{\text{displacement}}{\text{time}}\) Displacement is the ...

Abstract: The world is facing unavoidable disaster challenges, especially floods in Thailand, these inundations have been becoming increasingly difficult to manage each year. Therefore, a preliminary ...