What is the mass of a paratrooper who experiences an air resistance of 400 N and an acceleration of 4.5 m/s^2 during a parachute jump.

*The answer for the question written in the answer key is 75kg but I don’t understand how to solve it.

Explanation:

Given that,

The Camden holds a volume of

V = 2,000,000 gallons

At a height of

h = 24 m

We want to find the potential energy.

And potential energy can be calculated using

P.E = mgh

Where

m is the mass

g Is the acceleration due to gravity

h Is the height.

Given that,

Then volume is

V = 2,000,000 gallons

From research.

1 gallon ≈ 3.785 kg

Then,

2,000,000 gallons = 2,000,000 × 3.785 kg

So,

P.E = mgh

P.E = 2,000,000 × 3.785 × 9.81 × 24

P.E = 1.782 × 10^9 J.