Question

An astronaut is standing on top of a ladder 6.5 meters above the surface of Mars. If the astronaut has a mass of 175 kg and Mars has an acceleration of gravity of 3.5 m/s^2, what is the gravitational potential energy of the astronaut relative to the ground?

Answer 1

@johnweldon1993

Answer 2

@EclipsedStar

Answer 3

Do you know the formula to calculate gravitational potential energy? You can use it to get the answer

Answer 4

i have no idea

Answer 5

Have a look here

http://hyperphysics.phy-astr.gsu.edu/hbase/gpot.html

Answer 6

Formula for gravitational potentential energy:
GPE=mgh

m is the mass of the object
g is the acceleration due to gravity
h is the height of the objct

Answer 7

so
175 * 3.5 * 6.5

Answer 8

Yes, that's correct

Answer 9

so would this be correct 4.0 x 10^3 J

Answer 10

There we go!

*Or just 4 KJ but yeah lol

Answer 11

ok i have one more could y'all help

Answer 12

Yes, after rounding off, you would get 4.0x10^3

Answer 13

What's the question?

Answer 14

A 85.0kg person walks from the ground to the roof of a building 62.8 m tall. How much gravitational potential energy does the person have at the top of the building?

Answer 15

You can use the same formula to find the answer for this question. PE=mgh . This question assumes you are standing on Earth. Do you know what the value of g is on Earth's surface?

Answer 16

9.8

Answer 17

Yes, that's correct. You can now find PE by substituting the known values

Answer 18

5.23 x 10^4 J correct?

Answer 19

Correct :)