Question

A bird is flying in the air at a 4 m/s. If the mass of the bird is 7kg what is it’s kinetic energy

Answer 1

Kinetic energy:

"The form or phase of energy which is possessed by the body due to its motion or state of its motion."

• As the mathematical formula for K.E energy is;

• K.E=1/2 m×v²,⇒(1)

Step-by-step explanation:

Now, we have the following data, in the given problem:

• Velocity,v=4 m/s,
• Mass,m=7 kg,
• K.E=?,
• Solution:
• So, putting the values inside the equation(1),we will get the following answer:
• K.E=1/2×(7)×(4),
• K.E=1/2×28,
• K.E=28/2,
• K.E=14 Joules(or in other unit kg m²/sec²).

Answer 2

Answer: The kinetic energy of the flying bird is 56 Joules.

Step-by-step explanation:

Mass of the bird = 7 kg

Velocity of the flying bird = 4 m/s

Kinetic energy of the bird will be given by :

`K.E.=(1)/(2)mv^2`

`K.E.=(1)/(2)* 7 kg* (4 m/s)^2=56 Joules`

The kinetic energy of the flying bird is 56 Joules.