Question

question type the correct answer in the box. round your answer to the nearest whole number. calculate the height of the ball using pe = m × g × h. (hint: rearrange the formula to solve for h.) a 2.0 - kilogram ball held above the floor has 39 joules of potential energy. the balls height is about above the floor. (use g = 9.8 n/kg.)

Explanation:

Step1: Rearrange the potential - energy formula

Given $PE = m\times g\times h$, we can solve for $h$ as $h=\frac{PE}{m\times g}$.

Step2: Substitute the given values

We know that $PE = 39\ J$, $m = 2.0\ kg$, and $g=9.8\ N/kg$. Substituting these values into the formula $h=\frac{PE}{m\times g}$, we get $h=\frac{39}{2.0\times9.8}$.

Step3: Calculate the value of $h$

$h=\frac{39}{19.6}\approx 2.0$. Rounding to the nearest whole number, $h = 2$.

Answer:

2