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?

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