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?

Answer 1

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