Question

An object has kinetic energy of 324 J. If it’s speed is 9m/s, what is it’s mass?

Answer 1

It is 8 kilograms











I had to type more so here you go

Answer 2

8 kg.

Step-by-step explanation:

Remember that the formula to calculate the kinetick energy is half of the mass mutiplied by the squared velocity:

`Ke= .5mv^2`

So in order to solve this problem we will have to solve the equation for mass:

`M=(324J)/(.5*81) \\m=(324)/(40.5)\\ m=8 kg`

So by clearing the equation you now know that the answer is that there are 8 kg in an object that is moving at 9m/s and has a kinetic energy of 324J.