Question

How much kinetic energy does a 4 kg cats have while at 9 m/s​

Answer 1

162 Joules

Explanation:

Remember, the equation for the kinetic energy of an object is:

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

where m is the mass of the object in kg (kilograms), v is the velocity of the object in m/s (meters per second), and K is the kinetic energy of the object in J (joules).

We are given that the cat's mass is 4 kg. We will use this for m. We are also given that the cat is moving at 9 m/s. This would be it's speed. We can use this for velocity, or v. Plugging in we get:

`K=(1)/(2)mv^(2)=(1)/(2)(4)(9)^(2)=(2)(81)=162`

So K, or the kinetic energy, would be 162J.

I hope you find my answer and explanation to be helpful. Happy studying.