How high a hill would a 75 kg hiker has to climb to increase her gravitational potential energy by 10000 j

Explanation:

Given that,

Mass of the hiker is 75 kg

The gravitational potential energy by 10000 J

To solve :

The height of the hill.

Solve :

The gravitational potential energy of object , .

Also, Mass of hiker,

Now,

The relation between Gravitational potential energy (G) and Mass of object (M) is given as:

Where , g is acceleration due to gravity, .

Putting , values of G, g and m in above equation.

We get,

Hence , this is the required solution.

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.

i think the answer is a and b

i wish you luck