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nadya68 [22]
3 years ago
11

If an airplane with a mass of 5 tons has gravitational potential energy of 1000 kilojoules, what is its height?

Physics
1 answer:
VLD [36.1K]3 years ago
3 0
The gravitational potential energy of an object, measured with respect to the ground, is given by
U=mgh
where m is the object's mass, g is the gravitational acceleration and h is the height of the object measured from the ground.

In our problem, the mass of the plane is m= 5 tons = 5000 kg, while the potential energy is
U=1000 kJ=1 \cdot 10^6 J
so we can re-arrange the previous formula and use these data to calculate h, the height of the airplane:
h= \frac{U}{mg}= \frac{1 \cdot 10^6 J}{(5000 kg)(9.81 m/s^2)} =20.39 m
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