Therefore, to find the velocity V_e, we need to know the density of air, and the pressure difference (p_0 - p_e). The density can be found from standard tables if the temperature and the pressure are ...

For example, the formula for calculating speed is speed ... we need the other two. For example, to find the time taken to make a journey, we need the length of the journey and the speed of ...

The relationship between acceleration, velocity change and the time taken for the change is given by this formula ... and u = starting velocity. Find the acceleration of a car, if it starts ...