A backpack has a mass of 8 kg. It is lifted and given 54.9 J of gravitational potential energy. How high is it lifted? Acceleration due to gravity is g = 9.8 m/s2.

Question

Physics

Marlene

11 September, 00:09

A backpack has a mass of 8 kg. It is lifted and given 54.9 J of gravitational potential energy. How high is it lifted? Acceleration due to gravity is g = 9.8 m/s2.

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Answers (1)

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Arnav Mullins · Answer 1

Potencial Energy=hma

Where

Potencial Energy = E = 54.9J

h=?

m=8kg

a=9.8m/s^2

You need to know that 1 J=1 (kgm^2) / s^2

Isolate h=E / (ma)

h = (54.9) / (8*9.8)