an object with a mass of 100 grams (0.100 kg) is dropped from a certain height and has a velocity of 60 meters/second. if the potential energy of
this object is 179.99 joules, how high was the object when it was dropped?

180m

Explanation:

So this question involves an object in free fall. The most appropriate formula to use for this is the formula for kinetic energy since velocity is involved.

KE= 1/2mv²

And sice we have to find mass, we can follow the rule that GPE=KE

so mgh=1/2mv²

Now fill in the values and solve:

0.1x 10xh= 0.5x0.1x(60²)

1xh=180

h=180/1

h=180m

Even if you use 100g instead of 0.1kg, you will get the same answer

12000j is work done

3.2x10^7