Question

1. if kinetic energy is equal to 8.5j and potential energy is equal to 4.5 j what is its mechanical energy?

Explanation:

Step1: Recall the formula for mechanical energy

Mechanical energy ($E_m$) is the sum of kinetic energy ($E_k$) and potential energy ($E_p$), so the formula is $E_m = E_k + E_p$.

Step2: Substitute the given values

We know that $E_k = 8.5\,\text{J}$ and $E_p = 4.5\,\text{J}$. Substituting these into the formula, we get $E_m = 8.5 + 4.5$.

Step3: Calculate the sum

$8.5 + 4.5 = 13$. So the mechanical energy is $13\,\text{J}$.

Answer:

The mechanical energy is $\boldsymbol{13\,\text{J}}$.