Question

Which airplane has more potential energy, a boeing 787 dreamliner having a mass of 2,450kg at 11,500 m above Earth, or a boeing 747 having a mass of 3150 kg at 9000 m above Earth?

Answer 1

Step-by-step explanation:

For 787 dreamliner airplane,

Mass,
`m_1=2450\ kg`

Height,
`h_1=11500\ m`

Potential energy of 787 dreamliner airplane is given by :

`E_1=m_1gh_1\\\\E_1=2450* 9.8* 11500\\\\E_1=2.76* 10^8\ J`

For a boeing 747,

Mass,
`m_2=3150\ kg`

Height,
`h_2=9000 \ m`

:

Potential energy of a boeing 747 airplane is given by

`E_2=m_2gh_2\\\\E_2=3150* 9.8* 9000\\\\E_2=2.77* 10^8\ J`

So, the potential energy of a boeing 747 airplane is more than the 787 dreamliner airplane.