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trevon3 trevon3
  • 30-06-2016
  • Physics
Answered



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.


A.6.9 m B.0.15 m C.3.2 m D.0.7 m

Verified Answer :

Hanibal
Hanibal Hanibal
  • 30-06-2016

We know that:
Epg=mgh
Now:
h=(Epg)/mg
h=(54,9J)/8kg*9,8m/s
h=0,7m (d)

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