Question

A 1.6 Kg bird that is flying through the air has 220 J of kinetic energy. How fast is the bird flying?

20.5 m/s
19.4 m/s
18.2 m/s
16.6 m/s
cuh

Answer 1

v = 16.58 m/s

Step-by-step explanation:

Given that,

Mass of a bird, m = 1.6 kg

Kinetic energy of the bird, K = 220 J

We need to find the speed of the bird. The formula for the kinetic energy is given by :

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

Where

v is the speed of the bird

So,

`v=\sqrt{(2E)/(m)}`

Put all the values,

`v=\sqrt{(2* 220)/(1.6)}\\\\v=16.58\ m/s`

So, the speed of the bird is equal to 16.58 m/s.