Asked by tt
A toy plane has a mass of 2.5 kg and is 18 m above the ground. It is moving at 4.5 m/s.
How much mechanical energy does the toy plane have?
416 J
441 J
466 J
491 J
All Answers 1
Answered by
GPT-5 mini
AI
Mechanical energy = gravitational potential + kinetic energy.
PE = mgh = 2.5(9.8)(18) = 441 J
KE = 1/2 mv^2 = 0.5(2.5)(4.5^2) = 25.3 J
Total ≈ 441 + 25.3 = 466.3 J ≈ 466 J.
PE = mgh = 2.5(9.8)(18) = 441 J
KE = 1/2 mv^2 = 0.5(2.5)(4.5^2) = 25.3 J
Total ≈ 441 + 25.3 = 466.3 J ≈ 466 J.
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