To calculate the impact speed of a 4.00kg cannon ball dropped from 55.0m, you can use the equation v = √(2gh), where v is the impact speed, g is the acceleration due to gravity (9.8m/s²), and h is the height from which the ball was dropped (in this case, 55.0m).
For the calculation, you should use meters for distance and seconds for time. This will result in the impact speed being measured in meters per second (m/s).
Yes, this equation can be used for any object being dropped from a height, as long as the object is dropped in a vacuum or the air resistance is negligible. This is because the equation assumes that the only force acting on the object is gravity.
Yes, there are other factors that can affect the impact speed of a dropped object. These include air resistance, the shape and mass of the object, and the conditions of the surface on which the object lands.
This calculation can provide a fairly accurate estimate of the impact speed of a dropped object. However, it is important to keep in mind that it does not take into account all factors that may affect the impact speed, so the actual speed may differ slightly from the calculated value.