Physics

To calculate the average power delivered by gravity, we need to first determine the work done by gravity and then divide it by the time it takes for the object to fall. The formula for power is:

Where:

is the average power,

is the work done by gravity,

is the time.

 

Calculate the work done by gravity

The work done by gravity is equivalent to the gravitational potential energy lost by the object as it falls. The formula for work done by gravity is:

Where:

is the mass of the object,

is the acceleration due to gravity,

is the height the object falls.

 

First, we need to calculate the height the object falls during the 4 seconds. The object falls under constant acceleration, so we can use the equation for displacement under uniform acceleration:

Substitute the values: