Читать книгу Physics I For Dummies - Steven Holzner - Страница 66

This chapter deals with four quantities of motion: acceleration, velocity, time, and displacement. You work the standard equation relating displacement and time to get velocity:

And you see the standard equation relating velocity and time to get acceleration:

But both of these equations only go one level deep, relating velocity to displacement and time and acceleration to velocity and time. What if you want to relate acceleration to displacement and time? This section shows you how you can cut velocity out of the equation.

When you’re slinging around algebra, you may find it easier to write single quantities like v (to stand for ) rather than . You can usually turn v into later if necessary.