Potential energy can be calculated using the following rule: potential energy = mgh where: m is the mass = 85 kg g is the acceleration due to gravity = 9.8 m/sec^2 h is the height = 4 km = 4000 meters
Substitute in the above equation to get the potential energy as follows: Potential energy = 85*9.8*4000 = 3332000 joules
These forces are all equal and cancel each other out. Gravity pushes downward on the ice cream. This can also be called the weight of the ice cream. Buoyant force pushes the ice cream upward
