Question

What is the KE of a 0.5 kg puffin flying with 81 j of KE

Answer 1

The speed of a 0.5 kg puffin flying with 81J of KE can be expressed as
`18m/s`

What is kinetic energy ?

The kind of energy that an object has as a result of its motion is known as its kinetic energy in physics. The kinetic energy of a non-rotating object of mass m moving at a speed of v is in classical mechanics.

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

K.E= 81J

mass=0.5 kg

speed=?

`81=1/2 *0.5 *v^(2) \\\\\\\ 81= 0.25 v^(2) \\`

`324=v^(2) \\\\v=√(324) \\\\18m/s`