A parachutist weighing 80 kg descends at a constant speed of 6 m / s. What is the power of gravity acting on a parachutist?

Initial data: m (weight of the parachutist) = 80 kg; V (the speed with which the parachutist descends to the surface of the earth) = 6 m / s.

Constants: g (acceleration due to gravity) = 10 m / s ^ 2.

The mechanical power of gravity can be calculated using the formula:

N = A / t, where A is the work done by gravity (A = Ft * S).

N = A / t = Ft * S / t, where S / t is the speed of the parachutist.

N = Ft * V = m * g * V = 80 * 10 * 6 = 4800 W = 4.8 kW.

Answer: The power of gravity is 4.8 kW.