The maximum speed at the bottom of the drop is
3-The speed at the bottom of the drop is independent of the mass of the car.
To find the speed of the car we will need to find how long (seconds) it will fall.
Frictionless fall gravity time is:
Then we can determine the falling velocity by:
The gravity equations are here:
To calculate the speed of the car at the bottom of the drop if its mass were doubled, we would find that there is no reference to mass in gravity equations. That immediately indicates: "The speed at the bottom of the drop is independent of the mass of the car."
Information on free-falling objects is here:
Important Note: If the mass were doubled, there would be a
Using Law of Conservation of Energy, kinetic energy at the bottom of drop equals change in potential energy. Ignoring frictional losses
Inserting given values and taking
3. Evident from equation (1)