a bird has a mass of 0.2kg and is flying 10m above the ground with a speed of 7 m/s.What is the total mechanical energy of the bird?

Question

a bird has a mass of 0.2kg and is flying 10m above the ground with a speed of 7 m/s.What is the total mechanical energy of the bird?

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Diễm Kiều 2 months 2021-08-04T09:55:48+00:00 1 Answers 3 views 0

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    2021-08-04T09:57:38+00:00

    Answer:

    25 joule.

    Explanation:

    solution

    here,

    given

    mass =0.2 kg

    speed or velocity = 7m/s

    kinetic and mechanical energy =10 m

    mechanical energy = ?

    now,

    kinetic energy = 1/2 = m * (v)2

    = 1/2 = 0.2kg * (7)2

    = 1/2 = 10

    =5J

    hence , total kinetic energy of the bird is (5+10)=15J

    again,

    we have,

    mechanical energy =kinetic energy + potential energy

    = (15+10)J

    = 25J

    hence, the mechanical energy of the bird is 25J.

    here ,some formula and unit related to this question.

    kinetic energy= 1/2=m*(v)2

    kinetic energy = speed

    mechanical energy= (knietic+potential )energy

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